broken links at footprint page

[tolot27]

Many links, if not all at https://kicad.github.io/footprints/Resistor_SMD are broken. Sometimes, there is a rendering error, which adds a closing bracket to the links like for Vishay. The other links to kicad.github.io link to missing pdfs like, mnr_g.pdf.

This issue applies to further libraries as well, like to Inductor_SMD.

[SchrodingersGat]

Opened #29 to address this