message: Updates tool source codes + item ref
diff: @@ -74,13 +74,13 @@ For an upgrade, check the [Pizza build](../pizza_build.md).
  | Item | Manufacturer | Part number | Price (USD) | Sources | Notes |
  | ---- |--------------:| ------------------ | -------- | ---------------:|------ |
  -| a1 | | | 12.99 | [Z][t1amzn] | microSD-USB adapter, for flashing RasPi images |
  -| a2 | Preciva | PR-3254 (PR102001) | 39.99 | [Z][t2amzn] | Crimping tool for HX and HV connectors |
  +| a1 | | | 12.99 | [Z][a1amzn] | microSD-USB adapter, for flashing RasPi images |
  +| a2 | Preciva | PR-3254 (PR102001) | 39.99 | [Z][a2amzn] | Crimping tool for HX and HV connectors |
  -[t1amzn]:https://www.amazon.com/Anker-Portable-Reader-RS-MMC-Micro/dp/B006T9B6R2
  -[t2amzn]:https://www.amazon.com/gp/product/B07R1H3Z8X
  +[a1amzn]:https://www.amazon.com/Anker-Portable-Reader-RS-MMC-Micro/dp/B006T9B6R2
  +[a2amzn]:https://www.amazon.com/gp/product/B07R1H3Z8X
  -**NOTE: Items 15-17 and T2 above are also duplicated in the [wiring BOM](../../../1_Ventilator_System_Design/Electrical_System/wiring.md)**
  +**NOTE: Items 15-17 and a2 above are also duplicated in the [wiring BOM](../../../1_Ventilator_System_Design/Electrical_System/wiring.md)**
  ### Purchasing Guide
  