fixed string resource linking

app/src/main/res/menu/toolbar_menu.xml

@@ -4,7 +4,7 @@
 
     <item
         android:id="@+id/about"
-        android:title="@string/about"
+        android:title="@string/title_about"
         android:icon="@drawable/ic_info_black_24dp"
         app:showAsAction="always" />
 

app/src/main/res/navigation/mobile_navigation.xml

@@ -48,13 +48,13 @@
     <fragment
         android:id="@+id/about_fragment"
         android:name="com.vanced.manager.ui.fragments.AboutFragment"
-        android:label="@string/about"
+        android:label="@string/title_about"
         tools:layout="@layout/fragment_about" />
 
     <fragment
         android:id="@+id/install_theme_fragment"
         android:name="com.vanced.manager.ui.fragments.VancedThemeSelectionFragment"
-        android:label="@string/about"
+        android:label="@string/title_install"
         tools:layout="@layout/fragment_vanced_theme_selection">
 
         <action
@@ -70,7 +70,7 @@
     <fragment
         android:id="@+id/install_variant_fragment"
         android:name="com.vanced.manager.ui.fragments.VancedVariantSelectionFragment"
-        android:label="@string/about"
+        android:label="@string/title_install"
         tools:layout="@layout/fragment_vanced_variant_selection">
 
         <action
@@ -86,7 +86,7 @@
     <fragment
         android:id="@+id/install_language_fragment"
         android:name="com.vanced.manager.ui.fragments.VancedLanguageSelectionFragment"
-        android:label="@string/about"
+        android:label="@string/title_install"
         tools:layout="@layout/fragment_vanced_language_selection" />
 
     <action

app/src/main/res/values/strings.xml

@@ -39,6 +39,7 @@
 
 
     <!-- Install Page -->
+    <string name="title_install">Install</string>
 
 
 </resources>