cmd/exchange_template: Update docs

[cranktakular]

PR Description

If the exchange config isn't enabled, then the default setup function in the wrapper won't do anything with the config passed to it, causing any authentication to not be set. And thus, causing anything which uses authentication to fail.

Type of change

Please delete options that are not relevant and add an x in [] as item is complete.

• Bug fix (non-breaking change which fixes an issue)

How has this been tested

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration and
also consider improving test coverage whilst working on a certain feature or package.

• go test ./... -race
• golangci-lint run

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation and regenerated documentation via the documentation tool
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally and on Github Actions with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 35.90%. Comparing base (d518993) to head (c09f439).
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1494      +/-   ##
==========================================
- Coverage   37.75%   35.90%   -1.86%     
==========================================
  Files         411      411              
  Lines      147817   177595   +29778     
==========================================
+ Hits        55815    63758    +7943     
- Misses      84218   106055   +21837     
+ Partials     7784     7782       -2     

Files	Coverage Δ
cmd/exchange_template/exchange_template.go	47.00% <0.00%> (-3.62%)	⬇️

... and 386 files with indirect coverage changes

[gloriousCode]

Is there anything else that should be changed? I only ask because there is no other TestMain in /exchanges/ that has this present and they work with authenticated endpoints. If this is an issue for them, could you update all of those?

[cranktakular]

Never mind! Vague error messages led me here, but the fundamental issue was no assets/pairs being set in configtest.json on initial generation, which is the more graceful fix in general.

Maybe we could leave a comment about that somewhere in this tool, or in the files generated by it?

[gloriousCode]

All G! Yeah that's fine. Adding some details to suggest that you should populate configtest.json with asset/pairs before running tests would be good. Whether it's in ADD_NEW_EXCHANGE.md, commentary in the tool or otherwise I'm happy with. We're lacking in documentation, so any extra details is appreciated

[cranktakular]

I've now done so in the printed output from running the tool. Please let me know what you think of the wording there.

[gloriousCode]

Nice. Thanks for adding the expanded comment

[thrasher-]

Will be keeping this open for additional improvements to the exchange impl tools/docs up until Bitget is finished as @cranktakular goes through it

[samuael]

Thank you for this change, and for keeping the PR open.
I have added small updates and created a PR here to this(👆) @cranktakular s PR.