electricitymaps#6242: Update CEC and PJM links in DATA_SOURCES.md

The "sources by region" links for California CEC and for PJM are broken, as reported in issue electricitymaps#6242.  I've updated the links with the latest from the CEC and PJM sites.

DATA_SOURCES.md

@@ -436,7 +436,7 @@ For many European countries, data is available from [ENTSO-E](https://transparen
     - [EIA](https://www.eia.gov/electricity/data/eia860M/)
   - BPA: [BPA](https://transmission.bpa.gov/business/operations/Wind/baltwg.aspx)
   - CAISO
-    - CEC: [CEC](https://ww2.energy.ca.gov/almanac/electricity_data/electric_generation_capacity.html)
+    - CEC: [CEC](https://www.energy.ca.gov/data-reports/energy-almanac/california-electricity-data/electric-generation-capacity-and-energy)
     - Renewables: [CAISO](http://www.caiso.com/informed/Pages/CleanGrid/default.aspx)
     - Nuclear: [wikipedia.org](https://en.wikipedia.org/wiki/Diablo_Canyon_Power_Plant)
   - Florida TECO (US-FLA-TEC)
@@ -446,7 +446,7 @@ For many European countries, data is available from [ENTSO-E](https://transparen
     - Coal: [The Guardian: Hawaii to close its only coal power plant in a step toward renewable energy](https://web.archive.org/web/20220902132250/https://www.theguardian.com/us-news/2022/aug/31/hawaii-close-coal-power-plant-renewable-energy)
     - Other: [EIA](https://www.eia.gov/electricity/data/eia860M/)
   - NYISO: [NYISO Gold Book](https://www.nyiso.com/documents/20142/2226333/2021-Gold-Book-Final-Public.pdf)
-  - PJM: [PJM](http://www.pjm.com/-/media/markets-ops/ops-analysis/capacity-by-fuel-type-2019.ashx?la=en)
+  - PJM: [PJM](https://www.pjm.com/-/media/markets-ops/ops-analysis/capacity-by-fuel-type-2022.ashx)
   - PNM
     - Coal: [Github|electricitymaps-contrib|PR#4614](https://github.com/electricitymaps/electricitymaps-contrib/pull/4614)
     - EIA: [EIA](https://www.eia.gov/electricity/data/eia860M/)