py-compile: consistently quote 'like this', not `like this'.

* lib/py-compile (usage_error): Here.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/lib/py-compile b/lib/py-compile
index 699e28f..6916903 100755 (executable)
--- a/lib/py-compile
+++ b/lib/py-compile
@@ -36,7 +36,7 @@ me=py-compile
 usage_error ()
 {
   echo "$me: $*" >&2
-  echo "Try \`$me --help' for more information." >&2
+  echo "Try '$me --help' for more information." >&2
   exit 1
 }