diff --git a/doc/source/admin/special_topics/apache.md b/doc/source/admin/special_topics/apache.md
index e88b1fc5048..bbb5f408958 100644
--- a/doc/source/admin/special_topics/apache.md
+++ b/doc/source/admin/special_topics/apache.md
@@ -180,7 +180,7 @@ For this to work, the user under which your nginx server runs will need read acc
 ### External user authentication
 
 - [Apache for External Authentication](https://galaxyproject.org/admin/config/apache-external-user-auth/)
-- [Built-in Galaxy External Authentication](../authentication.md)
+- [Built-in Galaxy External Authentication](../authentication.html)
 
 ### Display Sites
 
diff --git a/doc/source/admin/special_topics/job_metrics.md b/doc/source/admin/special_topics/job_metrics.md
index dc9a6179899..16e2934cfac 100644
--- a/doc/source/admin/special_topics/job_metrics.md
+++ b/doc/source/admin/special_topics/job_metrics.md
@@ -1,4 +1,6 @@
-AGalaxy contains a plugin infrastructure for collecting and displaying metrics for job execution (see the original [pull request](https://bitbucket.org/galaxy/galaxy-central/pull-request/352) for implementation details).
+# Job Metrics
+
+Galaxy contains a plugin infrastructure for collecting and displaying metrics for job execution (see the original [pull request](https://bitbucket.org/galaxy/galaxy-central/pull-request/352) for implementation details).
 
 ## Configuration
 
diff --git a/doc/source/admin/special_topics/nginx.md b/doc/source/admin/special_topics/nginx.md
index b279face30d..4968c11edd6 100644
--- a/doc/source/admin/special_topics/nginx.md
+++ b/doc/source/admin/special_topics/nginx.md
@@ -304,4 +304,4 @@ server {          # This you should already have.
 ### External User Authentication
 
 - [Nginx for External Authentication](https://galaxyproject.org/admin/config/nginx-external-user-auth/)
-- [Built-in Galaxy External Authentication](../authentication.md)
+- [Built-in Galaxy External Authentication](../authentication.html)