chore(many): rename Golang to Go

[jba]

Description

The language's proper name is "Go", not "Golang".

Checklist

• [x ] I have followed Contributing Guidelines from CONTRIBUTING.MD
• [x ] Tests pass: go test -v ./.. (see Testing)
• [x ] Code formatted: gofmt (see Formatting)
• [ x] Vetting pass: go vet (see Formatting)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• [x ] Please merge this PR for me once it is approved

[code-review-assist]

Hi team,

I'm currently reviewing this pull request and will provide my feedback in a few minutes. In the meantime, here's a summary of the changes for you and other reviewers to quickly get up to speed:

This pull request, authored by jba, aims to rename all instances of "Golang" to "Go" within the golang-samples repository. The rationale is that "Go" is the language's official and proper name.

Here's a breakdown of the changes:

• Intent: Correctly use the language's official name, "Go", instead of the informal "Golang".
• Changes: The PR makes numerous updates across various sample applications and supporting files. The changes are primarily textual replacements of "Golang" with "Go". Specific examples include:
  • Updates to Dockerfile comments in several directories (e.g., appengine, cloudsql, run, etc.).
  • Modification of HTML titles in index.html files (e.g., in appengine_flexible/websockets/static/index.html).
  • Correction of a string in bigtable/helloworld/main.go.
  • Updates to Kokoro configuration scripts (testing/kokoro/configure_cloudsql.bash).
• Activity: The PR author has indicated that all tests, formatting, and vetting checks have passed.

The following table summarizes the affected files:

File	Change Summary
appengine/go11x/tasks/handle_task/Dockerfile	Updated comment to use "Go" instead of "Golang".
appengine_flexible/go115_and_earlier/websockets/static/index.html	Updated HTML title to use "Go" instead of "Golang".
appengine_flexible/websockets/static/index.html	Updated HTML title to use "Go" instead of "Golang".
bigtable/helloworld/main.go	Updated a greeting string to use "Go" instead of "golang".
cloudsql/mysql/database-sql/Dockerfile, cloudsql/postgres/database-sql/Dockerfile, cloudsql/sqlserver/database-sql/Dockerfile, eventarc/audit_storage/Dockerfile, eventarc/generic/Dockerfile, eventarc/pubsub/Dockerfile, getting-started/gopher-run/Dockerfile, memorystore/redis/cloud_run_deployment/Dockerfile, run/grpc-ping/Dockerfile, run/grpc-server-streaming/Dockerfile, run/hello-broken/Dockerfile, run/helloworld/Dockerfile, run/image-processing/Dockerfile, run/logging-manual/Dockerfile, run/markdown-preview/editor/Dockerfile, run/markdown-preview/renderer/Dockerfile, run/pubsub/Dockerfile, run/sigterm-handler/Dockerfile, run/system_package/Dockerfile	Updated comments in Dockerfiles to use "Go" instead of "Golang".
opentelemetry/instrumentation/app/logger.go	Updated comment to remove reference to "golang" context.
testing/kokoro/configure_cloudsql.bash	Updated comment to use "Go" instead of "Golang".

Short and sweet, a coding haiku:

Go's name, clear and bright,
Golang's shadow fades to grey,
Clean code takes flight.

Let me know if you have any questions.

[code-review-assist]

This pull request renames "Golang" to "Go" across the repository, which is a good change as "Go" is the language's official name. The changes seem comprehensive and the PR description and checklist are well-maintained.

[code-review-assist]

It's more concise and accurate to simply refer to "the context" rather than "the golang context". The type is already clear.

Suggested change

	// Get the SpanContext from the context.
	// Get the SpanContext from the context.

[telpirion]

While you're at it ... would you please also put "Go" in initial caps when it shows up in comments? I started switching some of the files, but there's a bunch.

Thanks!