shrlok: fix bad kwarg

edmond/plugins/shrlok.py

@@ -39,5 +39,5 @@ class ShrlokPlugin(Plugin):
         except OSError as exc:
             self.bot.log_e(f"Can't post text file: {exc}")
             return None
-        url = response.decode().replace(self.file_root, self.url_root, count=1)
+        url = response.decode().replace(self.file_root, self.url_root, 1)
         return url