Use different Change-Ids in the documentation of the revert endpoint

The reverting change has a Change-Id that is different from the
one of the original change. Using the same Change-Id is somewhat
misleading.

Change-Id: Iba06d150daf53151a5169cba66ae2c9e3a96725e

Documentation/rest-api-changes.txt

diff --git a/Documentation/rest-api-changes.txt b/Documentation/rest-api-changes.txt
index 5603d36..4fe2033 100644
--- a/Documentation/rest-api-changes.txt
+++ b/Documentation/rest-api-changes.txt
@@ -996,7 +996,7 @@
 
 .Request
 ----
-  POST /changes/myProject~master~I8473b95934b5732ac55d26311a706c9c2bde9940/revert HTTP/1.0
+  POST /changes/myProject~master~I1ffe09a505e25f15ce1521bcfb222e51e62c2a14/revert HTTP/1.0
 ----
 
 As response a link:#change-info[ChangeInfo] entity is returned that