Update comment in src/Chartjs/doc/index.rst

Co-authored-by: Simon André <[email protected]>

Author: hellomedia

src/Chartjs/doc/index.rst

@@ -195,7 +195,7 @@ custom Stimulus controller:
                     },
                 },
             };
-            // Add to an existing Y axis config
+            // ... or update an existing Y axis config
             event.detail.config.options.scales.y.ticks = {
                 callback: function (value, index, values) {
                     /* ... */