Update horizontal rule format button to 48dp

Author: theck13

aztec/src/main/res/drawable/format_bar_button_horizontal_rule.xml

@@ -2,15 +2,15 @@
 
 <vector
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="44dp"
-    android:width="44dp"
-    android:viewportHeight="44"
-    android:viewportWidth="44" >
+    android:height="48dp"
+    android:width="48dp"
+    android:viewportHeight="48"
+    android:viewportWidth="48" >
 
     <!-- @color/grey_darken_20 -->
     <path
         android:fillColor="#ff4f748e"
-        android:pathData="M13,21h18v2H13V21z" >
+        android:pathData="M14.2,22.9h19.6v2.2H14.2V22.9z" >
     </path>
 
 </vector>

aztec/src/main/res/drawable/format_bar_button_horizontal_rule_disabled.xml

@@ -2,15 +2,15 @@
 
 <vector
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="44dp"
-    android:width="44dp"
-    android:viewportHeight="44"
-    android:viewportWidth="44" >
+    android:height="48dp"
+    android:width="48dp"
+    android:viewportHeight="48"
+    android:viewportWidth="48" >
 
     <!-- @color/grey_lighten_20 -->
     <path
         android:fillColor="#ffc8d7e1"
-        android:pathData="M13,21h18v2H13V21z" >
+        android:pathData="M14.2,22.9h19.6v2.2H14.2V22.9z" >
     </path>
 
 </vector>

aztec/src/main/res/drawable/format_bar_button_horizontal_rule_highlighted.xml

@@ -2,15 +2,15 @@
 
 <vector
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:height="44dp"
-    android:width="44dp"
-    android:viewportHeight="44"
-    android:viewportWidth="44" >
+    android:height="48dp"
+    android:width="48dp"
+    android:viewportHeight="48"
+    android:viewportWidth="48" >
 
     <!-- @color/blue_wordpress -->
     <path
         android:fillColor="#ff0087be"
-        android:pathData="M13,21h18v2H13V21z" >
+        android:pathData="M14.2,22.9h19.6v2.2H14.2V22.9z" >
     </path>
 
 </vector>