refactor(docs): remove duplicate util func to format possible values

[rubenhoenle]

No description provided.

[github-actions]

Merging this branch will decrease overall coverage

Impacted Packages	Coverage Δ	🤖
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/cdn/distribution	36.66% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/dns/zone	22.03% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/networkinterface	27.53% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/securitygrouprule	27.96% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/server	32.23% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/volume	16.94% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/loadbalancer/loadbalancer	52.51% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/mongodbflex/instance	29.88% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/postgresflex/user	27.36% (ø)
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils	81.44% (-1.25%)	👎

---

Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/cdn/distribution/datasource.go	0.00% (ø)	33	0	33
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/cdn/distribution/resource.go	39.95% (ø)	368	147	221
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/dns/zone/resource.go	28.73% (ø)	181	52	129
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/networkinterface/datasource.go	0.00% (ø)	38	0	38
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/networkinterface/resource.go	31.73% (ø)	249	79	170
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/securitygrouprule/datasource.go	0.00% (ø)	38	0	38
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/securitygrouprule/resource.go	36.17% (ø)	235	85	150
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/server/resource.go	27.70% (ø)	361	100	261
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/volume/datasource.go	0.00% (ø)	35	0	35
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/iaas/volume/resource.go	19.81% (ø)	207	41	166
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/loadbalancer/loadbalancer/resource.go	56.17% (ø)	559	314	245
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/mongodbflex/instance/resource.go	33.72% (ø)	436	147	289
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/postgresflex/user/resource.go	25.00% (ø)	240	60	180
github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils/utils.go	79.10% (-1.98%)	67 (-7)	53 (-7)	14	👎

Please note that the "Total", "Covered", and "Missed" counts above refer to code statements instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code.

Changed unit test files

• github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils/utils_test.go