Update guides to use "webpack serve" instead of "webpack-dev-server"

[thesurenk]

Referring to this webpack/webpack-dev-server#2759

Updated the below documentation to use webpack serve instead of webpack-dev-server in package.json files.

1. "Development" (/src/content/guides/development.md)
2. "Production" (/src/content/guides/production.md)

[jsf-clabot]

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[thesurenk]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ ksurendra
❌ Suren Konathala

Suren Konathala seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.

Signed the CLA before submitting the PR at https://cla.js.foundation/webpack/webpack.js.org?pullRequest=4069

[alexander-akait]

@ksurendra you use different emails in commit and in CLA

[thesurenk]

@ksurendra you use different emails in commit and in CLA

Thanks. I used the same email address while committing, not sure what i missed. I updated the author details and pushed another commit. Does this help? If not, we can close this PR and i can send another PR.

[anshumanv]

PR diff shows no changes, can you verify?

[thesurenk]

PR diff shows no changes, can you verify?

Updated only the author name, email.. not the code. Not sure what is happening.

[chenxsan]

Closed via #4091, and thanks for your contribution here @ksurendra.