Improve markdown format in the documentation

[remyleone]

• MD001 - Heading levels should only increment by one level at a time
• MD004 - Inconsistent style for unordered list indicators
• MD005 - Inconsistent indentation for list items at the same level
• MD007 - Unordered list indentation (expected 2 spaces)
• MD009 - Trailing spaces at the end of a line
• MD010 - Hard tabs found in the document (use spaces instead)
• MD012 - Multiple consecutive blank lines
• MD013 - Line length exceeds maximum (typically 80 or 120 characters)
• MD022 - Headings should be surrounded by blank lines
• MD024 - Multiple headings with the same content
• MD025 - Multiple top-level headings (more than one H1)
• MD026 - Trailing punctuation in heading (colon, semicolon, comma)
• MD031 - Fenced code blocks should be surrounded by blank lines
• MD032 - Lists should be surrounded by blank lines
• MD033 - Inline HTML detected (use markdown instead)
• MD034 - Bare URL detected (use angle brackets or link syntax)
• MD040 - Fenced code blocks should have a language specified
• MD041 - First line in file should be a top-level heading
• MD042 - Empty link text detected
• MD046 - Code block style inconsistency (fenced vs indented)
• MD047 - File should end with a single newline character
• MD051 - Link to internal anchor that doesn't exist
• MD056 - Link to heading that doesn't exist
• MD059 - Link to image reference that doesn't exist
• MD062 - Link text missing or empty
• MD064 - First heading in file should be top level (H1)
• MD076 - Code block has no matching closing fence
• MD077 - Reference link label not found