update faulty urls

[lucy-schick]

Detailed issue can be found here https://github.com/NewGraphEnvironment/onboarding/issues/94

Here a brief list of references with faulty urls, i've only gone through the OW report, so there is probably more...

• [x] FLNRO. 2013a. “Bulkley River Angling Management Plan.” Ministry of Forests, Lands and Natural Resource Operations (FLNRO). http://www.env.gov.bc.ca/fw/fish/guide/docs/amp/skeena-amp-bulkley-river.pdf.
• [x] ———. 2013b. “Overview of Angling Management Plans for the Skeena Watershed.” Ministry of Forests, Lands, Natural Resource Operations (FLNRO). http://www.env.gov.bc.ca/skeena/fish/AMPs/Context_AMP.pdf.
• [ ] Oliver, Allison. 2018. “Analysis of Water Quality Monitoring in the Morice Water Management Area.” http://moricetrust.ca/reports/MWMT%20Water%20Quality%20Analysis.pdf.