Mark ext2 as completed in README.md - #18

Failed with exit code: 1

08-filesystems/ext2.md:1 MD041/first-line-heading/first-line-h1 First line in a file should be a top-level heading [Context: "## EXT2 dosya sistemi nedir?"] https://github.com/DavidAnson/markdownlint/blob/v0.34.0/doc/md041.md

08-filesystems/dosya-sistemi-nedir.md:16 MD032/blanks-around-lists Lists should be surrounded by blank lines [Context: "- **NTFS:** Windows'un varsayı..."] https://github.com/DavidAnson/markdownlint/blob/v0.34.0/doc/md032.md

08-filesystems/dosya-sistemi-nedir.md:15 MD022/blanks-around-headings Headings should be surrounded by blank lines [Expected: 1; Actual: 0; Below] [Context: "## En Yaygın Dosya Sistemleri"] https://github.com/DavidAnson/markdownlint/blob/v0.34.0/doc/md022.md

08-filesystems/dosya-sistemi-nedir.md:9 MD032/blanks-around-lists Lists should be surrounded by blank lines [Context: "- **Organizasyon:** Sisteminiz..."] https://github.com/DavidAnson/markdownlint/blob/v0.34.0/doc/md032.md

08-filesystems/dosya-sistemi-nedir.md:8 MD022/blanks-around-headings Headings should be surrounded by blank lines [Expected: 1; Actual: 0; Below] [Context: "## Temel Görevleri"] https://github.com/DavidAnson/markdownlint/blob/v0.34.0/doc/md022.md

08-filesystems/dosya-sistemi-nedir.md:5 MD022/blanks-around-headings Headings should be surrounded by blank lines [Expected: 1; Actual: 0; Below] [Context: "## Bir Dosya Sistemi Olmasaydı Ne Olurdu?"] https://github.com/DavidAnson/markdownlint/blob/v0.34.0/doc/md022.md

02-boot/limine.md:237:23 MD052/reference-links-images Reference links and images should use a label that is defined [Missing link or image reference definition: "dokümantasyon"] [Context: "[7][dokümantasyon]"] https://github.com/DavidAnson/markdownlint/blob/v0.34.0/doc/md052.md