Merge branch 'nd/remote-update-doc'

"git remote update" can take both a single remote nickname and a
nickname for remote groups, but only one of them was documented.

* nd/remote-update-doc:
remote: doc typofix
remote.txt: update documentation for 'update' command

diff --combined Documentation/git-remote.txt
index 595948da53093459635fd3dd8c79fe756020eea8,77e9f00000c22177e4a325a700c6c2ad816c95fc..0cad37fb81d99c3928f1a763a79350836b8e70e6
--- 1/Documentation/git-remote.txt
--- 2/Documentation/git-remote.txt
+++ b/Documentation/git-remote.txt
@@@ -172,28 -172,24 +172,28 @@@ With `-n` option, the remote heads are 
  
  'prune'::
  
 -Deletes all stale remote-tracking branches under <name>.
 -These stale branches have already been removed from the remote repository
 -referenced by <name>, but are still locally available in
 -"remotes/<name>".
 +Deletes stale references associated with <name>. By default, stale
 +remote-tracking branches under <name> are deleted, but depending on
 +global configuration and the configuration of the remote we might even
 +prune local tags that haven't been pushed there. Equivalent to `git
 +fetch --prune <name>`, except that no new references will be fetched.
 ++
 +See the PRUNING section of linkgit:git-fetch[1] for what it'll prune
 +depending on various configuration.
  +
  With `--dry-run` option, report what branches will be pruned, but do not
  actually prune them.
  
  'update'::
  
- Fetch updates for a named set of remotes in the repository as defined by
- remotes.<group>.  If a named group is not specified on the command line,
+ Fetch updates for remotes or remote groups in the repository as defined by
+ remotes.<group>.  If neither group nor remote is specified on the command line,
  the configuration parameter remotes.default will be used; if
  remotes.default is not defined, all remotes which do not have the
  configuration parameter remote.<name>.skipDefaultUpdate set to true will
  be updated.  (See linkgit:git-config[1]).
  +
 -With `--prune` option, prune all the remotes that are updated.
 +With `--prune` option, run pruning against all the remotes that are updated.
  
  
  DISCUSSION
@@@ -203,7 -199,7 +203,7 @@@ The remote configuration is achieved us
  `remote.origin.fetch` configuration variables.  (See
  linkgit:git-config[1]).
  
 -Examples
 +EXAMPLES
  --------
  
  * Add a new remote, fetch, and check out a branch from it