Fix escaped angle bracket's in integration documentation.

There are several escaped angle brackets in our integration docs.  While these
render fine within GitLab, they are broken rendered on doc.gitlab.com because
pandoc does not escape them correctly.

doc/integration/bitbucket.md

@@ -14,7 +14,7 @@ Bitbucket will generate an application ID and secret key for you to use.
 1.  Select "Add consumer".
 1.  Provide the required details.
-    - Name: This can be anything. Consider something like "\<Organization\>'s GitLab" or "\<Your Name\>'s GitLab" or something else descriptive.
+    - Name: This can be anything. Consider something like `<Organization>'s GitLab` or `<Your Name>'s GitLab` or something else descriptive.
     - Application description: Fill this in if you wish.
     - URL: The URL to your GitLab installation. 'https://gitlab.company.com'
 1.  Select "Save".

doc/integration/github.md

@@ -16,7 +16,7 @@ GitHub will generate an application ID and secret key for you to use.
 1.  Select "Register new application".
 1.  Provide the required details.
-    - Application name: This can be anything. Consider something like "\<Organization\>'s GitLab" or "\<Your Name\>'s GitLab" or something else descriptive.
+    - Application name: This can be anything. Consider something like `<Organization>'s GitLab` or `<Your Name>'s GitLab` or something else descriptive.
     - Homepage URL: The URL to your GitLab installation. 'https://gitlab.company.com'
     - Application description: Fill this in if you wish.
     - Default authorization callback URL is '${YOUR_DOMAIN}/import/github/callback'

doc/integration/gitlab.md

@@ -14,7 +14,7 @@ GitLab.com will generate an application ID and secret key for you to use.
 1.  Select "New application".
 1.  Provide the required details.
-    - Name: This can be anything. Consider something like "\<Organization\>'s GitLab" or "\<Your Name\>'s GitLab" or something else descriptive.
+    - Name: This can be anything. Consider something like `<Organization>'s GitLab` or `<Your Name>'s GitLab` or something else descriptive.
     - Redirect URI:
     ```

doc/integration/twitter.md

@@ -7,7 +7,7 @@ To enable the Twitter OmniAuth provider you must register your application with
 1.  Select "Create new app"
 1.  Fill in the application details.
-    - Name: This can be anything. Consider something like "\<Organization\>'s GitLab" or "\<Your Name\>'s GitLab" or
+    - Name: This can be anything. Consider something like `<Organization>'s GitLab` or `<Your Name>'s GitLab` or
     something else descriptive.
     - Description: Create a description.
     - Website: The URL to your GitLab installation. 'https://gitlab.example.com'