Fix delete_repo in template (#22606)

Currently the value doesn't match the model, so selecting it results in
a 500.

https://github.com/go-gitea/gitea/blob/e8ac6a9aeacf0adf21982abc51baa8938e5dd6bb/models/auth/token_scope.go#L42

Signed-off-by: jolheiser <john.olheiser@gmail.com>

Author: jolheiser

templates/user/settings/applications.tmpl

@@ -165,7 +165,7 @@
 					</div>
 					<div class="field">
 						<div class="ui checkbox">
-							<input class="enable-system" type="checkbox" name="scope" value="delete:repo">
+							<input class="enable-system" type="checkbox" name="scope" value="delete_repo">
 							<label>delete_repo</label>
 						</div>
 					</div>