Fix Grafana dashboard axis label typo

Author: sd109

chart/templates/api/config-map-grafana-dashboard.yml

@@ -141,7 +141,7 @@ data:
                 "axisBorderShow": false,
                 "axisCenteredZero": false,
                 "axisColorMode": "text",
-                "axisLabel": "Number of requests per minute",
+                "axisLabel": "Number of requests",
                 "axisPlacement": "auto",
                 "axisWidth": 50,
                 "barAlignment": 0,