fix(android): Clarify directions on Text Size menu

android/KMAPro/kMAPro/src/main/res/drawable/textsize_decrease.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+
+    <path android:fillColor="@android:color/white" android:pathData="M0.99,19h2.42l1.27,-3.58h5.65L11.59,19h2.42L8.75,5h-2.5L0.99,19zM5.41,13.39L7.44,7.6h0.12l2.03,5.79H5.41zM23,11v2h-8v-2H23z"/>
+
+</vector>

android/KMAPro/kMAPro/src/main/res/drawable/textsize_increase.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="48dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="48dp">
+
+    <path android:fillColor="@android:color/white" android:pathData="M0.99,19h2.42l1.27,-3.58h5.65L11.59,19h2.42L8.75,5h-2.5L0.99,19zM5.41,13.39L7.44,7.6h0.12l2.03,5.79H5.41zM20,11h3v2h-3v3h-2v-3h-3v-2h3V8h2V11z"/>
+
+</vector>

android/KMAPro/kMAPro/src/main/res/layout/text_size_controller.xml

@@ -15,7 +15,7 @@
         android:layout_marginStart="5dp"
         android:layout_marginEnd="5dp"
         android:contentDescription="@string/ic_text_size_down"
-        android:src="@drawable/ic_action_decrement" />
+        android:src="@drawable/textsize_decrease" />
 
     <SeekBar
         android:id="@+id/seekBar"
@@ -32,6 +32,6 @@
         android:layout_marginStart="5dp"
         android:layout_marginEnd="5dp"
         android:contentDescription="@string/ic_text_size_up"
-        android:src="@drawable/ic_action_increment" />
+        android:src="@drawable/textsize_increase" />
 
 </LinearLayout>