clean up references on docs site

[jGaboardi]

http://docs.momepy.org/en/stable/references.html#references

Specifics:

• AF19 – remove colon in title
• Fel18 – correct title; add DOI
  • Resilience and urban design: A systems approach to the study of resilience in urban form – Learning from the case of the Gorbals
  • 10.48730/yrsa-7747
• GMBeiraoD12 – add journal link and paper link (no DOI?)
  • http://www.urbanform.org/online_public/2012_1.shtml
  • http://www.urbanform.org/online_unlimited/pdf2012/201216_27.pdf
• HLM12 – remove redundant cities
• HBP17 – add link to paper
  • https://pure.tudelft.nl/ws/portalfiles/portal/51462127/Paer_66_book_proceedings_28092017.pdf
• McG95 – add author, add DOI, etc
  • info here - https://www.fs.usda.gov/treesearch/pubs/3064
• TRBM20 – correct pages; add DOI
  • 48(8):2188-2205, doi: 10.1177/2399808320967680.

[martinfleis]

GMBeiraoD12 – add journal link and paper link (no DOI?)

Yeah, Urban Morphology journal is stuck in the past and does not have DOIs.