[DOCS]: Trading technologies Names

[trevorb1]

Type of documentation issue.

Missing

Link to existing documentation

https://osemosys-global.readthedocs.io/en/latest/model-structure.html#end-use-fuel-trading

Issue Description

Trading technology codes are set up to be alphabetical based on country codes. For example, trading from from canada to the usa will always TRNCANxxUSAxx. However, this is not mentioned in the documentation anywhere.

For example, if you input this into the configuration file:

user_defined_capacity: 
  TRNCANBCUSANW: [1, 2030]
  TRNUSANECANON: [1, 2030]

The TRNCANBCUSANW capacity would be added, but the TRNUSANECANON would not be

Suggested Update

Make an example table showing how naming converntions should be inputted into the configuration file

Additional Info

No response