Update metadata title

Based on #1055

Author: mattwojo

WSL/faq.yml

@@ -1,6 +1,6 @@
 ### YamlMime:FAQ
 metadata:
-  title: Frequently Asked Questions (FAQ)
+  title: FAQ's about Windows Subsystem for Linux
   description: "Find answers to frequently asked questions (FAQs) about the Windows Subsystem for Linux, such as 'What can I do with WSL?'."
   keywords: BashOnWindows, bash, wsl, windows, windowssubsystem, faq
   ms.date: 09/15/2020