Fix kubectl create configmap example

[yosri-brh]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

example 4 and example 1 are the same but example 4 comment is about key=value from file which needs --from-env-file not --from-file

Which issue(s) this PR is related to:

Fixes kubernetes/website#54270

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

NONE

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: yosri-brh / name: Yosri Barhoumi (7b07356)

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[lmktfy]

If path/to/bar is a folder, how about this?

Suggested change

	kubectl create configmap my-config --from-env-file=path/to/bar.env
	kubectl create configmap my-config --from-file=path/to/bar/example-file

[yosri-brh]

@lmktfy the comment mentions "key=value pairs in the file" which matches --from-env-file behavior. example 1 already covers the folder case