Unit test for checking get .md file title

[Yoda-Canada]

We need to test the following function:

MAGIC-SSG/magic_ssg/asstLib.py Line 41-59 in 6b37c61

• The title must in the top 3 lines
• The title shouldn't start with "#", "##", "###"

[Yoda-Canada]

This issue solved by commit ef3bbec