[DX-1423] Update TYK_GW_SECRETS definition

[dcs3spp]

DX-1423

Summary	Reword TYK_GW_SECRETS config/environment variable
Type	Bug
Status	In Progress
Points	N/A
Labels	-

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User description

Description

This PR updates the config.go godoc comments in response to a ticket raised by @oluwaseyeayinla. It updates the description for TYK_GW_SECRETS with an example and explains what what can be be updated using the secrets://key notation.

Related Issue

https://tyktech.atlassian.net/browse/DX-1423

Motivation and Context

How This Has Been Tested

Screenshots (if appropriate)

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Refactoring or add test (improvements in base code or adds test coverage to functionality)

Checklist

• [x] I ensured that the documentation is up to date
• [ ] I explained why this PR updates go.mod in detail with reasoning why it's required
• [ ] I would like a code coverage CI quality gate exception and have explained why

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PR Type

Documentation

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Description

• Updated the godoc comments for the TYK_GW_SECRETS environment variable in config/config.go.
• Added a detailed explanation of the syntax and usage of TYK_GW_SECRETS.
• Included an example to illustrate how the secrets can be used in the Tyk Gateway configuration.

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Changes walkthrough 📝

	Relevant files
Documentation	config.go Update godoc comments for `TYK_GW_SECRETS` environment variable config/config.go Updated the godoc comments for the TYK_GW_SECRETS environment variable. Added a detailed explanation of the syntax and usage of TYK_GW_SECRETS. Included an example to illustrate how the secrets can be used in the Tyk Gateway configuration. +12/-1

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