Mention 'git receive-pack' --cc/--reviewer args

Since we switched to args4j for our parsing these options are available
on both 'git receive-pack' and 'gerrit receive-pack'.  We might as well
just talk about it on 'git receive-pack' in the documentation.

Signed-off-by: Shawn O. Pearce <sop@google.com>
diff --git a/Documentation/user-upload.txt b/Documentation/user-upload.txt
index c93d1ca..c93c3cf 100644
--- a/Documentation/user-upload.txt
+++ b/Documentation/user-upload.txt
@@ -153,10 +153,10 @@
 
 Specific reviewers can be requested and/or additional ``carbon
 copies'' of the notification message may be sent by including these
-as arguments to `gerrit receive-pack`:
+as arguments to `git receive-pack`:
 
 ====
-  git push --receive-pack='gerrit receive-pack --reviewer=a@a.com --cc=b@o.com' tr:kernel/common HEAD:refs/for/experimental
+  git push --receive-pack='git receive-pack --reviewer=a@a.com --cc=b@o.com' tr:kernel/common HEAD:refs/for/experimental
 ====
 
 The `\--reviewer='email'` and `\--cc='email'` options may be
@@ -174,7 +174,7 @@
   ...
   [remote "for-a-exp"]
     url = tr:kernel/common
-    receivepack = gerrit receive-pack --reviewer=a@a.com --cc=b@o.com
+    receivepack = git receive-pack --reviewer=a@a.com --cc=b@o.com
     push = HEAD:refs/for/experimental
 
   $ git push for-a-exp