Adjust the Abstract and SOTD section.
Add a missing # to the [RFC2119] reference
Missed a # in reference.
Merge pull request #137 from foolip/rfc2119-link

Add a missing # to the [RFC2119] reference
Change s/MediaA11y/MAUR/ for the reference.

To make it more conformant with the other references.
Merge pull request #136 from silviapfeiffer/ExtendAbstract

Adjust the Abstract and SOTD section.