Fix a typo

Author: bbatsov

clojure-mode.el

@@ -1307,7 +1307,7 @@ symbol properties."
                  'clojure-indent-function)
             (get (intern-soft (match-string 1 function-name))
                  'clojure-backtracking-indent)))
-      ;; indent symbols starting if, when, ...
+      ;; indent symbols starting with if, when, ...
       ;; such as if-let, when-let, ...
       ;; like if, when, ...
       (when (string-match (rx string-start (or "if" "when" "let" "while") (syntax symbol))