Allow single character strings in azure_rm_api_management_api Path variable validation

[Lakshan-Banneheke]

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Description

This is to fix #26921 in azurerm_api_management_api path variable validation.

Previously, a path with a single character string such as "a" was not allowed by the regex.
Analysis: #26921 (comment)

The regex is modified to have ? after [\w-].
In regular expressions, the ? is a quantifier that means "zero or one" of the preceding element. It makes the preceding element optional. Hence, a single character string is allowed.

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• azure_rm_api_management_api - Path variable now allows a string with a single character.

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• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Related Issue(s)

Fixes #26921

Note

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[stephybun]

Thanks for this PR @Lakshan-Banneheke. It appears the regex is missing something since now one of the other test cases fail for the APIM API path validation, specifically:

2024-08-07T06:06:00.1584723Z === RUN   TestAzureRMApiManagementApiPath_validation
2024-08-07T06:06:00.1585306Z     api_management_test.go:154: Expected the Api Management Api Path to trigger a validation error for 'api1/'
2024-08-07T06:06:00.1585580Z --- FAIL: TestAzureRMApiManagementApiPath_validation (0.01s)

[Lakshan-Banneheke]

Hi @stephybun
Apologies for the oversight. The regex is updated now and the tests are passing. Please check now.

[stephybun]

Thanks @Lakshan-Banneheke LGTM 👍

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