update links to external module docs

docs/simplesamlphp-advancedfeatures.md

 SimpleSAMLphp Advanced Features
 ===============================
 
-<!-- 
-	This file is written in Markdown syntax. 
-	For more information about how to use the Markdown syntax, read here:
-	http://daringfireball.net/projects/markdown/syntax
--->
-
-
-
 [TOC]
 
 SimpleSAMLphp documentation
@@ -60,7 +52,7 @@ Automatic update of SAML 2.0 Metadata XML from HTTPS
 ----------------------------------------------------
 
 The `metarefresh` module is the preferred method for doing this.
-Please see the [metarefresh documentation](./metarefresh:simplesamlphp-automated_metadata).
+Please see the [metarefresh documentation](/docs/contrib_modules/metarefresh/simplesamlphp-automated_metadata).
 
 
 

docs/simplesamlphp-googleapps.md

 Setting up a SimpleSAMLphp SAML 2.0 IdP to use with Google Workspace (G Suite / Google Apps) for Education
 ============================================
 
-<!-- 
-	This file is written in Markdown syntax. 
-	For more information about how to use the Markdown syntax, read here:
-	http://daringfireball.net/projects/markdown/syntax
--->
-
-
-
 [TOC]
 
 SimpleSAMLphp news and documentation
@@ -75,7 +67,7 @@ The next step is to configure the way users authenticate on your IdP. Various mo
 `exampleauth:Static`
 : Automatically log in as a user with a set of attributes.
 
-[`ldap:LDAP`](./ldap:ldap)
+[`ldap:LDAP`](/docs/contrib_modules/ldap/ldap.html)
 : Authenticates an user to a LDAP server.
 
 For more authentication modules, see [SimpleSAMLphp Identity Provider QuickStart](simplesamlphp-idp).

docs/simplesamlphp-idp-more.md

@@ -14,7 +14,7 @@ If you have read about the AJAX iFrame Single Log-Out approach at Andreas' blog
 Attribute Release Consent
 -------------------------
 
-The attribute release consent is documented in a [separate document](./consent:consent).
+The attribute release consent is documented in a [separate document](/docs/contrib_modules/consent/consent.html).
 
 
 Support for bookmarking the login page

docs/simplesamlphp-idp.md

 SimpleSAMLphp Identity Provider QuickStart
 ===========================================
 
-<!-- 
-	This file is written in Markdown syntax. 
-	For more information about how to use the Markdown syntax, read here:
-	http://daringfireball.net/projects/markdown/syntax
--->
-
-
 [TOC]
 
 This guide will describe how to configure SimpleSAMLphp as an identity provider (IdP). You should previously have installed SimpleSAMLphp as described in [the SimpleSAMLphp installation instructions](simplesamlphp-install)
@@ -26,13 +19,13 @@ Authentication module
 
 The next step is to configure the way users authenticate on your IdP. Various modules in the `modules/` directory provides methods for authenticating your users. This is an overview of those that are included in the SimpleSAMLphp distribution:
 
-[`authcrypt:Hash`](./authcrypt:authcrypt)
+[`authcrypt:Hash`](/docs/contrib_modules/authcrypt/authcrypt.html)
 : Username & password authentication with hashed passwords.
 
-[`authcrypt:Htpasswd`](./authcrypt:authcrypt)
+[`authcrypt:Htpasswd`](/docs/contrib_modules/authcrypt/authcrypt.html)
 : Username & password authentication against .htpasswd file.
 
-[`authX509:authX509userCert`](./authX509:authX509)
+[`authX509:authX509userCert`](/docs/contrib_modules/authX509/authX509.html)
 : Authenticate against a LDAP database with a SSL client certificate.
 
 `exampleauth:UserPass`
@@ -41,17 +34,17 @@ The next step is to configure the way users authenticate on your IdP. Various mo
 `exampleauth:Static`
 : Automatically log in as a user with a set of attributes.
 
-[`ldap:LDAP`](./ldap:ldap)
+[`ldap:LDAP`](/docs/contrib_modules/ldap/ldap.html)
 : Authenticates an user to a LDAP server.
 
-[`ldap:LDAPMulti`](./ldap:ldap)
+[`ldap:LDAPMulti`](/docs/contrib_modules/ldap/ldap.html)
 : Authenticates an user to one of several LDAP server.
   The user can choose the LDAP server from a dropdown list.
 
-[`sqlauth:SQL`](./sqlauth:sql)
+[`sqlauth:SQL`](/docs/contrib_modules/sqlauth/sql.html)
 : Authenticate an user against a database.
 
-[`radius:Radius`](./radius:radius)
+[`radius:Radius`](/docs/contrib_modules/radius/radius.html)
 : Authenticates an user to a Radius server.
 
 [`multiauth:MultiAuth`](./multiauth:multiauth)
@@ -61,12 +54,9 @@ The next step is to configure the way users authenticate on your IdP. Various mo
 : Authenticate against a SAML IdP. Can be used for bridging.
 
 `authYubiKey:YubiKey`
-: Authenticate with [an YubiKey](http://www.yubico.com/products/yubikey/).
-
-[`authfacebook:Facebook`](./authfacebook:authfacebook)
-: Authenticate with a Facebook ID.
+: Authenticate with [a YubiKey](https://www.yubico.com/products/yubikey/).
 
-[`authtwitter:Twitter`](./authtwitter:oauthtwitter)
+[`authtwitter:Twitter`](/docs/contrib_modules/authtwitter/oauthtwitter.html)
 : Authenticate with your Twitter account using the Twitter OAuth API.
 
 [`papi:PAPI`](https://github.com/rediris-es/simplesamlphp-module-papi/blob/master/README.md)

docs/simplesamlphp-install.md

@@ -375,7 +375,7 @@ in a separate document.
    + [Remote SP reference](simplesamlphp-reference-sp-remote)
    + [Setting up an IdP for Google Workspace (G Suite / Google Apps)](simplesamlphp-googleapps)
    + [Advanced Topics](simplesamlphp-idp-more)
- - [Automated Metadata Management](./metarefresh:simplesamlphp-automated_metadata)
+ - [Automated Metadata Management](/docs/contrib_modules/metarefresh/simplesamlphp-automated_metadata)
  - [Maintenance and configuration](simplesamlphp-maintenance)
 
 

docs/simplesamlphp-sp.md

@@ -158,7 +158,7 @@ in federations will differ, but the common part is that you would need to
 provide the *SAML 2.0 metadata of your SP*, and register that with the
 federation administration. You will probably be required too to consume
 the federation metadata periodically. Read more about
-[automated metadata management](./metarefresh:simplesamlphp-automated_metadata)
+[automated metadata management](/docs/contrib_modules/metarefresh/simplesamlphp-automated_metadata)
 to learn more about that.