Fix typos in String.transform

diff --git a/src/java.base/share/classes/java/lang/String.java b/src/java.base/share/classes/java/lang/String.java
index 4d0ba2604f8..37066e9a4cf 100644
--- a/src/java.base/share/classes/java/lang/String.java
+++ b/src/java.base/share/classes/java/lang/String.java
@@ -3180,12 +3180,12 @@ public final class String
* string. The function should expect a single String argument
* and produce an {@code R} result.
* <p>
- * Any exception thrown by {@code f()} will be propagated to the
+ * Any exception thrown by {@code f.apply()} will be propagated to the
* caller.
*
- * @param f functional interface to a apply
+ * @param f a function to apply
*
- * @param <R> class of the result
+ * @param <R> the type of the result
*
* @return the result of applying the function to this string
*