Updated Greek translation.

fix grammar, typo and translate conventions

Fix translate

Translate Images

[skip ci] Fix translate

[skip ci] Create French structure-overview.md

[ci skip] Create French start-looking-ahead.md

[ci skip] typo in input-forms.md

[ci skip] Translation and fix reference

[skip ci] translation to uzbek

- Fix names and references guides internals.
- Add internals Spanish translation.
- Drafting corrections Spanish guides.

[ci skip] Fix typo in Migrations guide

[skip ci] translate spanish docs

Fixed typos and grammar errors in logging guide

Fixes #5316: Added `startsWith()` and `endsWith()` to `yii\helpers\StringHelper`. Methods are binary-safe, multibyte-safe and optionally case-insensitive

[skip ci] Translate images start-workflow.md

[skip ci] Spanish translations update