Links to LoRa Alliance specifications are broken

[avbentem]

The LoRa Alliance has changed the URL structure of its documentation again, now using some WordPress-specific URLs that are likely not future proof either. As this is the second major change in just a few years, maybe all references should just be removed, leaving it up to the reader to find the proper specifications.

For example, 404s:

• https://lora-alliance.org/sites/default/files/2018-05/lorawan_regional_parameters_v1.0.2_final_1944_1.pdf
• https://lora-alliance.org/sites/default/files/2018-07/lorawan_regional_parameters_v1.0.3reva_0.pdf
• https://lora-alliance.org/sites/default/files/2020-06/rp_2-1.0.1.pdf

Some new URLs, note the changes in the year-month parts too:

• https://lora-alliance.org/wp-content/uploads/2020/11/lorawan_regional_parameters_v1.0.2_final_1944_1.pdf
• https://lora-alliance.org/wp-content/uploads/2020/11/lorawan_regional_parameters_v1.0.3reva_0.pdf
• https://lora-alliance.org/wp-content/uploads/2020/11/rp_2-1.0.1.pdf