Merge branch 'gj/user-manual-fix-grep-example'

Fix an example in the user-manual.

* gj/user-manual-fix-grep-example:
  doc: fix git grep args order in Quick Reference

Author: gitster

Documentation/user-manual.adoc

@@ -4466,7 +4466,7 @@ $ git show		    # most recent commit
 $ git diff v2.6.15..v2.6.16 # diff between two tagged versions
 $ git diff v2.6.15..HEAD    # diff with current head
 $ git grep "foo()"	    # search working directory for "foo()"
-$ git grep v2.6.15 "foo()"  # search old tree for "foo()"
+$ git grep "foo()" v2.6.15  # search old tree for "foo()"
 $ git show v2.6.15:a.txt    # look at old version of a.txt
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