Fix syntax issues

Signed-off-by: Joas Schilling <coding@schilljs.com>

admin_manual/configuration_files/external_storage/auth_mechanisms.rst

@@ -33,7 +33,7 @@ setup of the mount point.
 The **Log-in credentials, save in session** mechanism uses the Nextcloud login
 credentials of the user to connect to the storage. These are not stored anywhere
 on the server, but rather in the user session, giving increased security.
-This method has some important drawbacks, since Nextcloud has no access to the storage 
+This method has some important drawbacks, since Nextcloud has no access to the storage
 credentials and therefore cannot perform any background tasks on the storage:
 
 * Sharing is disabled

admin_manual/office/example-docker.rst

@@ -40,9 +40,7 @@ On a recent Ubuntu or Debian this should be possible using:
     apt-get install apache2
     a2enmod proxy proxy_wstunnel proxy_http ssl
 
-Afterward, configure one VirtualHost properly to proxy the traffic. For security reason we recommend to use a subdomain such as office.example.com instead of running on the same domain. An example config can be found below:
-
-.. code-block:: apache2
+Afterward, configure one VirtualHost properly to proxy the traffic. For security reason we recommend to use a subdomain such as office.example.com instead of running on the same domain. An example config can be found below::
 
     ########################################
     # Reverse proxy for Collabora Online
@@ -113,7 +111,7 @@ Update the docker image:
 List running docker containers:
     .. code-block:: bash
 
-        docker ps 
+        docker ps
 
 Stop and remove the Collabora Online container with the container id of the running one:
     .. code-block:: bash

developer_manual/digging_deeper/projects.rst

@@ -12,7 +12,7 @@ Register a resource provider
 
 Things like files, deck cards and talk rooms are called Resources in projects.
 In order to add your own resource type, we need to create a class implementing the
-`OCP\Collaboration\Resources\IProvider` interface.
+``OCP\Collaboration\Resources\IProvider`` interface.
 
 .. code-block:: php
 
@@ -82,7 +82,7 @@ In order to add your own resource type, we need to create a class implementing t
     }
 
 
-The `MyResourceProvider` class needs to be registered during the :ref:`app bootstrap<Bootstrapping>`.
+The ``MyResourceProvider`` class needs to be registered during the :ref:`app bootstrap<Bootstrapping>`.
 
 .. code-block:: php
 
@@ -128,14 +128,14 @@ As you can see we also already register a front-end script, which we are going t
 Provide a user interface
 ------------------------
 
-The user interface can be registered through the public `OCP.Collaboration.registerType`
+The user interface can be registered through the public ``OCP.Collaboration.registerType``
 JavaScript method. The first parameter represents the resource type that has already
-been specified in the `IResourceProvider` implementation. The second parameter is an object with
+been specified in the ``IResourceProvider`` implementation. The second parameter is an object with
 three properties:
 
-  * `typeString` A localized string that will be displayed in the dropdown when choosing which resource type to link to
-  * `typeIconClass` A CSS class of the icon that should be used for this entry
-  * `action` An async function that will produce a resource picker UI and resolves with the resource id
+  * ``typeString`` A localized string that will be displayed in the dropdown when choosing which resource type to link to
+  * ``typeIconClass`` A CSS class of the icon that should be used for this entry
+  * ``action`` An async function that will produce a resource picker UI and resolves with the resource id
 
 The following example shows how a Vue.js component could be used to render the
 widget user interface, however this approach works for any other framework as well
@@ -182,9 +182,9 @@ we can simply dispatch it when we render our main page template.
 
     \OC::$server->getEventDispatcher()->dispatch('\OCP\Collaboration\Resources::loadAdditionalScripts');
 
-In our Vue app, we can then render the pre-built projects picker available in the npm package `nextcloud-vue-collections`.
+In our Vue app, we can then render the pre-built projects picker available in the npm package ``nextcloud-vue-collections``.
 
-.. code-block:: vue
+.. code-block::
 
     <template>
         <div>

user_manual/groupware/sync_thunderbird.rst

@@ -27,7 +27,7 @@ When they are installed, if you are on Windows, go to **Extras**/**Synchronisati
 Alternative: Using the CardBook add-on (Contacts only)
 ------------------------------------------------------
 `CardBook <https://addons.thunderbird.net/en/thunderbird/addon/cardbook/>`_ is an advanced alternative to Thunderbird's address book, which supports CardDAV. You can have TbSync and CardBook installed in parallel.
- 
+
 1. Click the CardBook icon in the upper right corner of Thunderbird:
 
 .. image:: ../images/cardbook_icon.png