Fix doc typo.

Change-Id: I9d4db682e3d365e783d5d70fbf66d47fe04e88eb
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 27be51a..b27f4cf 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -803,7 +803,7 @@
      *
      * @param intent The Intent to broadcast; all receivers matching this
      *               Intent will receive the broadcast.
-     * @param receiverPermission (optional) String naming a permissions that
+     * @param receiverPermission (optional) String naming a permission that
      *               a receiver must hold in order to receive your broadcast.
      *               If null, no permission is required.
      *