Add a TOC in faq doc page.

It will be useful when other questions will be added.

Add a TOC in faq doc page.
9af86e80 · hhakim · bc422197 · 9af86e80
Commit 9af86e80 authored 4 years ago by hhakim
--- a/gen_doc/faq.md
+++ b/gen_doc/faq.md
@@ -2,6 +2,9 @@

 # Frequently Asked Question

+[1. why did I get a file-not-found error when running demos or examples ?](#one)
+
+\anchor one
 ## 1. why did I get a file-not-found error when running demos or examples ?