gs cite to manubot fix

Author: YousifAlKhoury

_cite/cite.py

@@ -137,7 +137,7 @@
     # Manubot doesn't work without an id
     plugin = get_safe(source, "plugin", "")
 
-    if _id and plugin != "google-scholar.py"
+    if _id and plugin != "google-scholar":
         log("Using Manubot to generate citation", 1)
 
         try: