Update pointers.html

The use of the word "vast" instead of "waste" in "a waste of time" was corrected, and a superfluous "|" in a code section was removed
Merge pull request #139 from Zeldy/patch-2

Update pointers.html
Update modules.html
Merge pull request #142 from Zeldy/patch-6

Update modules.html
functional_programming.html: fix broken link

Partially addresses #141.
garbage_collection.html: add missing file

Partially addresses #141.