Documentation/config.txt: fix minor typo

Add a missing article at the beginning of a sentence, and rephrase slightly. Signed-off-by: Thomas Quinot <thomas@quinot.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Thomas Quinot committed Nov 8, 2014 at 11:45 UTC a79c3a1b815b2ee5bdf5ad0d2c0c0cebbaa74fa9
1 file changed +1 -1
Documentation/config.txt
+1 -1
@@ -669,7 +669,7 @@ alias.*::
669 confusion and troubles with script usage, aliases that
670 hide existing Git commands are ignored. Arguments are split by
671 spaces, the usual shell quoting and escaping is supported.
672 - quote pair and a backslash can be used to quote them.
672 + A quote pair or a backslash can be used to quote them.
673 +
674 If the alias expansion is prefixed with an exclamation point,
675 it will be treated as a shell command. For example, defining