Clear up syntax for command reference files

Change-Id: I687a0efcb603912a96406876f8f987512d46e449
diff --git a/Documentation/cmd-plugin-enable.txt b/Documentation/cmd-plugin-enable.txt
index 9b52736..955267e 100644
--- a/Documentation/cmd-plugin-enable.txt
+++ b/Documentation/cmd-plugin-enable.txt
@@ -32,7 +32,7 @@
 Enable a plugin:
 
 ----
-	ssh -p 29418 localhost gerrit plugin enable my-plugin
+ssh -p 29418 localhost gerrit plugin enable my-plugin
 ----
 
 GERRIT