searx: Fix typo in method name

Tests:

- Uninstall of searx works.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>

plinth/modules/searx/__init__.py

@@ -108,7 +108,7 @@ class SearxApp(app_module.App):
     def uninstall(self):
         """De-configure and uninstall the app."""
         super().uninstall()
-        privileged.unininstall()
+        privileged.uninstall()
 
 
 class SearxWebserverAuth(Webserver):

plinth/modules/searx/privileged.py

@@ -156,7 +156,7 @@ def disable_public_access():
 
 
 @privileged
-def unininstall():
+def uninstall():
     """Remove configuration uWSGI file."""
     shutil.rmtree('/etc/searx', ignore_errors=True)
     pathlib.Path(UWSGI_FILE).unlink(missing_ok=True)