Sync with maint

* maint:
  Documentation/config.txt: fix minor typo
  config.txt: fix typo

Author: gitster

Documentation/config.txt

@@ -683,7 +683,7 @@ alias.*::
 	confusion and troubles with script usage, aliases that
 	hide existing Git commands are ignored. Arguments are split by
 	spaces, the usual shell quoting and escaping is supported.
-	quote pair and a backslash can be used to quote them.
+	A quote pair or a backslash can be used to quote them.
 +
 If the alias expansion is prefixed with an exclamation point,
 it will be treated as a shell command.  For example, defining
@@ -2339,7 +2339,7 @@ status.showUntrackedFiles::
 	files which are not currently tracked by Git. Directories which
 	contain only untracked files, are shown with the directory name
 	only. Showing untracked files means that Git needs to lstat() all
-	all the files in the whole repository, which might be slow on some
+	the files in the whole repository, which might be slow on some
 	systems. So, this variable controls how the commands displays
 	the untracked files. Possible values are:
 +