Fix issue template language codes and CONTRIBUTING.md CLA URL inconsistency

[Copilot]

Review feedback on PR #648 identified two issues: the translation feedback template used incorrect language codes that didn't match the repo's actual translations/ directory names, and the new root CONTRIBUTING.md used a different CLA URL than the existing etc/CONTRIBUTING.md.

Changes

• .github/ISSUE_TEMPLATE/translation_feedback.yml — Replaced generic uppercase language codes (ES, ZH, JA, KO, AR) with the actual folder names from translations/ (e.g., es, zh-CN, zh-TW, zh-HK, pt-BR, pt-PT, etc.) so issue reports map directly to actionable directory paths.

• CONTRIBUTING.md (root) — Aligned CLA URL to https://cla.microsoft.com (matching etc/CONTRIBUTING.md); added an explicit reference link to etc/CONTRIBUTING.md to reduce content drift between the two files.

• .github/ISSUE_TEMPLATE/lesson_correction.yml — Added from PR Add repository standards: CONTRIBUTING guide, CODE_OF_CONDUCT, and structured issues #648 as-is; the file path placeholder was already correct (lessons/3-NeuralNetworks/03-Perceptron/README.md).

[leestott]

looking at languages these are not correct

[Copilot]

Pull request overview

This PR updates contributor-facing repository metadata by adding a root contributing guide and introducing structured GitHub Issue Forms, with a focus on making translation-related reports map cleanly to the repo’s translations/ directory and aligning CLA guidance.

Changes:

• Added a root CONTRIBUTING.md, aligning the CLA URL to https://cla.microsoft.com and linking to etc/CONTRIBUTING.md.
• Added a translation feedback issue form with locale-style language codes matching translations/ folder names.
• Added a lesson correction/typo issue form for structured lesson fix reports.

Show a summary per file

File	Description
CONTRIBUTING.md	Adds a root contributing guide with CLA link alignment and a pointer to the more detailed etc/CONTRIBUTING.md.
.github/ISSUE_TEMPLATE/translation_feedback.yml	Adds a translation feedback issue form with a language dropdown using repo folder locale tags.
.github/ISSUE_TEMPLATE/lesson_correction.yml	Adds a lesson correction issue form for structured reports of typos, links, and code errors.

Review details

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• Files reviewed: 3/3 changed files
• Comments generated: 2
• Review effort level: Low

[Copilot]

looking at languages these are not correct

Fixed in the latest commit. The dropdown now lists all 54 languages that have folders under translations/ (e.g. bg, bn, cs, da, el, et, fa, fi, he, hr, hu, km, kn, lt, ml, mr, ms, my, ne, no, pa, pcm, ro, sk, sl, sr, sv, sw, ta, te, th, tl, ur, zh-MO, and the previously missing ones), ordered alphabetically by language name.