fix: typo in --feature-request.yaml (#7669)

Fix typo

.github/ISSUE_TEMPLATE/--feature-request.yaml

@@ -10,7 +10,7 @@ body:
 
 - type: checkboxes
   attributes:
-    label: Please confirm if feature request does NOT exists already ?
+    label: Please confirm if feature request does NOT exist already ?
     description: We kindly ask that you [search](https://github.com/nocodb/nocodb/issues?q=is%3Aissue+sort%3Acreated-desc+) to see if an issue already exists for your feature
     options:
     - label: I confirm there is no existing issue for this