no bug - Fix a typo in a TaskCluster group r=marco

Differential Revision: https://phabricator.services.mozilla.com/D55951

--HG--
extra : moz-landing-system : lando

taskcluster/ci/config.yml

@@ -143,7 +143,7 @@ treeherder:
         'Static-Analysis': 'Full tree static-analysis'
         'SS': 'Shadow scheduler'
         'test-info': 'Test manifest skip/fail information'
-        'vismet': 'Visual Metrics Analsyis'
+        'vismet': 'Visual Metrics Analysis'
         'condprof': 'Conditioned Profile Builder'
 
 index: