fix quoting in example

diff --git a/doc/git-annex-diffdriver.mdwn b/doc/git-annex-diffdriver.mdwn
index 994d195202251b9b5e24d8974556f591b5a3fa98..6033ebdb52e3bcbcacd0cb26ddb708a3934ef551 100644 (file)
--- a/doc/git-annex-diffdriver.mdwn
+++ b/doc/git-annex-diffdriver.mdwn
@@ -24,7 +24,7 @@ as the external diff driver, where cmd is the external diff
 driver you want it to run, and params are any extra parameters to pass
 to it. Note the trailing "--", which is required.
 
-For example, set `GIT_EXTERNAL_DIFF=git-annex diffdriver -- j-c-diff --`
+For example, set `GIT_EXTERNAL_DIFF="git-annex diffdriver -- j-c-diff --"`
 
 # OPTIONS