Correct typo in RevWalk.parseBody comment

Change-Id: I0e65a5a6809a8d32d256322dbcae94b6aa603e5e
Signed-off-by: Kevin Sawicki <kevin@github.com>

org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevWalk.java

@@ -965,7 +965,7 @@ public class RevWalk implements Iterable<RevCommit> {
 	}
 
 	/**
-	 * Ensure the object's fully body content is available.
+	 * Ensure the object's full body content is available.
 	 * <p>
 	 * This method only returns successfully if the object exists and was parsed
 	 * without error.