Format code blocks inside markdown files (documentation)
There are issues with code blocks inside some *.md files (some files use code blocks syntax, some do not). First of all, it's not consistent but what's really bad is when *.md file is being displayed incorrectly. You can find an example of what I'm saying in CodingStandards.md under How we log changes section. https://github.com/torproject/tor/blob/master/doc/HACKING/CodingStandards.md#how-we-log-changes
Part of the git log output is still displayed as a regular text rather than a formatted code block.
Goal of this ticket is to go through all *.md files under
doc/HACKING directories and format code snippets accordingly.
```c // code snippet // written in // C language
// command to be run // inside bash
This should fix the issues described above and enable syntax highlighting on supported websites and editors.