[4.0] Capitalize "Hide all messages" (#34765)

Author: Quy

administrator/language/en-GB/com_postinstall.ini

@@ -9,7 +9,7 @@ COM_POSTINSTALL_CONFIGURATION="Post-installation Messages: Options"
 COM_POSTINSTALL_EMPTYSTATE_BUTTON_ADD="Reset Messages"
 COM_POSTINSTALL_EMPTYSTATE_CONTENT="You have read all the messages."
 COM_POSTINSTALL_EMPTYSTATE_TITLE="Post-installation and Upgrade Messages"
-COM_POSTINSTALL_HIDE_ALL_MESSAGES="Hide all messages"
+COM_POSTINSTALL_HIDE_ALL_MESSAGES="Hide all Messages"
 COM_POSTINSTALL_LBL_SINCEVERSION="Since version %s"
 COM_POSTINSTALL_MESSAGES_FOR="Showing messages for"
 COM_POSTINSTALL_MESSAGES_TITLE="Post-installation Messages for %s"