Explorer.js - Slightly nicer variable name

Ex: Create a custom group `Education`. It has entity name `Custom_Education`.

Before: Suggested variable is `$custom_Education = \Civi\Api4\Custom::get('Education')`

After: Suggested variable is `$customEducation = \Civi\Api4\Custom::get('Education')`

ang/api4Explorer/Explorer.js

@@ -697,7 +697,7 @@
         if (action.slice(0, 3) === 'get') {
           result = lcfirst(action.replace(/s$/, '').slice(3) || entity);
         }
-        var results = lcfirst(_.isNumber(index) ? result : pluralize(result)),
+        var results = _.camelCase(_.isNumber(index) ? result : pluralize(result)),
           paramCount = _.size(params),
           i = 0;