Add @attr links to TextInputLayout

Change-Id: I64ec96261c7aafd14e417caf37fecb164e6ffb4c
diff --git a/design/src/android/support/design/widget/TextInputLayout.java b/design/src/android/support/design/widget/TextInputLayout.java
index b9319b5..095b90e 100644
--- a/design/src/android/support/design/widget/TextInputLayout.java
+++ b/design/src/android/support/design/widget/TextInputLayout.java
@@ -487,6 +487,8 @@
      * Sets the max length to display at the character counter.
      *
      * @param maxLength maxLength to display. Any value less than or equal to 0 will not be shown.
+     *
+     * @attr ref android.support.design.R.styleable#TextInputLayout_counterMaxLength
      */
     public void setCounterMaxLength(int maxLength) {
         if (mCounterMaxLength != maxLength) {
@@ -503,6 +505,8 @@
 
     /**
      * Returns the max length shown at the character counter.
+     *
+     * @attr ref android.support.design.R.styleable#TextInputLayout_counterMaxLength
      */
     public int getCounterMaxLength() {
         return mCounterMaxLength;