Fix documentation header level error.

Change-Id: I47e253e37d38551f98f9bde5af0d3d6ac17c4f2b
diff --git a/Documentation/intro-change-screen.txt b/Documentation/intro-change-screen.txt
index 887e454..1fd56b6 100644
--- a/Documentation/intro-change-screen.txt
+++ b/Documentation/intro-change-screen.txt
@@ -26,7 +26,7 @@
 
 [[configuration]]
 Configuration
-~~~~~~~~~~~~~
+-------------
 
 The new change screen is deactivated by default. It can be activated system-wide
 by changing the link:config-gerrit.html[gerrit.changeScreen] setting to
@@ -35,7 +35,7 @@
 
 [[switching-between-patch-sets]]
 Switching between patch sets
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
 
 As already mentioned above, the main difference between the old and the new
 change screen is the fact that only one patch set is presented on the screen.
@@ -49,14 +49,14 @@
 
 [[download-commands]]
 Download commands
-~~~~~~~~~~~~~~~~~
+-----------------
 
 The download commands are moved to the 'Download' drop down box.  Patch files
 can be downloaded as base64 encoded or zipped versions.
 
 [[quick-approve]]
 Quick approve
-~~~~~~~~~~~~~
+-------------
 
 The so called 'Quick approve' button is some times confusing. Normal users (i.e.
 non-maintainers) see this as 'Verified+1' button to the right of the 'Reply'
@@ -78,7 +78,7 @@
 
 [[reply-button]]
 Reply button
-~~~~~~~~~~~~
+------------
 
 This button corresponds to the 'Review' button the on patch set panel on the old
 change screen.  The only new feature: the user can optionaly send an email
@@ -89,7 +89,7 @@
 
 [[edit-commit-message]]
 Edit commit message
-~~~~~~~~~~~~~~~~~~~
+-------------------
 
 To edit the commit message use the 'Edit Message' button on the change header,
 which will open a drop-down editor box.
@@ -98,7 +98,7 @@
 
 [[edit-change-topic]]
 Edit change topic
-~~~~~~~~~~~~~~~~~
+-----------------
 
 To edit the topic use the edit icon to the right of the topic field.
 
@@ -106,14 +106,14 @@
 
 [[abandon-restore]]
 Abandon or Restore changes
-~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------
 
 When a change is abandoned or restored, a panel appears and a comment message
 can be provided.
 
 [[working-with-drafts]]
 Working with draft changes and patch sets
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------------------
 
 When a change or a patch set is a draft, then three additional buttons appear on
 the action panel: 'Publish', 'Delete Revision', and 'Delete Change'. In the
@@ -122,7 +122,7 @@
 
 [[draft-comments]]
 Highlight draft comments
-~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------
 
 If a patch set has draft comments that weren't published yet, then that patch
 set is marked on the list in the 'Revisions' drop down list. In addition a red
@@ -130,7 +130,7 @@
 
 [[codemirror]]
 Codemirror
-~~~~~~~~~~
+----------
 
 On the user preferences page, 'Side By Side' or 'Unified Diff' view can be
 configured.  Use the "/" key to start the CodeMirror search, like in vim.
@@ -143,7 +143,7 @@
 
 [[reviewers]]
 Reviewers
-~~~~~~~~~
+---------
 
 Reviewer are split into two groups: Reviewers who actually voted on the change
 in the 'Reviewers' field, and reviewers, who were added to the change but didn't
@@ -160,7 +160,7 @@
 
 [[auto-refresh]]
 Auto refresh of change data
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------
 
 On the new change screen polling for updates to the currently open change is
 activated per default.  For example, if another user votes or comments on the
@@ -172,7 +172,7 @@
 
 [[depends-on-needed-by]]
 "Depends on" and "Needed by"
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
 
 Dependencies and dependent changes are listed in the 'Related Changes' drop
 down.
@@ -182,7 +182,7 @@
 
 [[file-table]]
 File table
-~~~~~~~~~~
+----------
 
 The user can now manually toggle the 'reviewed' flag per file using the check
 box to the left of the filename.
@@ -192,7 +192,7 @@
 
 [[included-in]]
 Included in
-~~~~~~~~~~~
+-----------
 
 To see the branches a specific change was merged into and the list of the tags
 a change was tagged with, use the 'Included In' drop down on the change header,
@@ -202,7 +202,7 @@
 
 [[missing-features]]
 Missing features
-~~~~~~~~~~~~~~~~
+----------------
 
 Several features have not been implemented yet: