Correct punctuation for inconsistency

Bug: 187216931
Test: manually test
Change-Id: Ibd9c81e84b5f091b6f71e18ad79342979881d8b8
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 8a6ff0d..3c38242 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -5262,7 +5262,7 @@
     <!-- Part of list to compose user's accessibility shortcut list. [CHAR LIMIT=NONE] -->
     <string name="accessibility_shortcut_hardware_keyword">hold volume keys</string>
     <!-- Summary for hardware shortcut in accessibility edit shortcut dialog. [CHAR LIMIT=NONE] -->
-    <string name="accessibility_shortcut_edit_dialog_summary_hardware">Press &amp; hold both volume keys.</string>
+    <string name="accessibility_shortcut_edit_dialog_summary_hardware">Press &amp; hold both volume keys</string>
     <!-- Title for triple tap shortcut in accessibility edit shortcut dialog. [CHAR LIMIT=NONE] -->
     <string name="accessibility_shortcut_edit_dialog_title_triple_tap">Triple-tap screen</string>
     <!-- Part of list to compose user's accessibility shortcut list. [CHAR LIMIT=NONE] -->