Fix broken links due to word wrapping

[alejandro5042]

GFM says:

Although link titles may span multiple lines, they may not contain a blank line.

Source: https://github.github.com/gfm/#links

Even if they don't have a blank line, VS Code doesn't like them:

vs.

Plus, it's weird. This PR removes all new lines via regex:

• Search: (\[[^\]]*?)\s*\n\s*(.*?\]\()
• Replace: $1 $2
• Globs: *.md

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PR based on #41.

[joseph-mueller]

I think this is a safe change. It looks like a lot of links were touched that didn't substantially change. I suspect that is because the regex replaces strings of white space (/s*) with a single space, but I didn't verify.

So, it's sort of a noisy commit, but arguably it cleans up the sources some.

I'm also a little puzzled because I tested most or all of these links using Jekyll serve. Were these just ugly or non-functional?