doc: git-pull: link to new merge conflicts guide

Signed-off-by: Julia Evans <julia@jvns.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-pull.adoc

@@ -38,7 +38,8 @@ or `pull.ff` with your preferred behaviour.
 
 If there's a merge conflict during the merge or rebase that you don't
 want to handle, you can safely abort it with `git merge --abort` or
-`git rebase --abort`.
+`git rebase --abort`. See linkgit:gitmergeconflicts[7]
+(or `git help mergeconflicts`) for a guide to handling merge conflicts.
 
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