Small layout improvements

app/src/main/res/layout/fragment_pro.xml

@@ -55,7 +55,7 @@
                 android:layout_height="wrap_content"
                 android:layout_marginTop="24dp"
                 android:text="@string/title_pro_list"
-                android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                android:textAppearance="@style/TextAppearance.AppCompat.Medium"
                 android:textColor="?attr/colorAccent"
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintTop_toBottomOf="@id/tvInfo" />

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

@@ -812,7 +812,7 @@
         To make FairEmail sustainable in the long term, some convenience and advanced features are not free to use.
         FairEmail displays a small banner to remind you of this, which will be removed if you purchase the pro features.
     </string>
-    <string name="title_pro_hint">Buying pro features will allow you to use all current and future pro features, will keep this app maintained, and supported</string>
+    <string name="title_pro_hint">Buying pro features will allow you to use all current and future pro features, will keep this app maintained, and supported.</string>
     <string name="title_pro_price">Please see <a href="https://github.com/M66B/FairEmail/blob/master/FAQ.md#user-content-faq19">this FAQ</a> about the price of the pro features</string>
     <string name="title_pro_pending">Purchase pending</string>
     <string name="title_pro_activated">All pro features are activated</string>