* zstd: add link to homepage
* zsh: add link to homepage
* zopflipng: add link to homepage
* zbarimg: add link to homepage
* z: add link to homepage
* yesod: add link to homepage
* xsv: add link to homepage
* xo: add link to homepage
* xcv: add link to homepage
* wuzz: add link to homepage
* wordgrinder: add link to homepage
* wget: add link to homepage
* webtorrent: add link to homepage
* webpack: add link to homepage
* wat2wasm: add link to homepage
* w3m: add link to homepage
* vue: add link to homepage
* vsce: add link to homepage
* virtualboxvm: add link to homepage
* vim: add link to homepage
* vegeta: add link to homepage
* vault: add link to homepage
* valgrind: add link to homepage
* vagrant: add link to homepage
* upx: add link to homepage
* valgrind: add page
* valgrind: tweak Memcheck example
Provide alternate, clearer syntax that functions the same and update
description accordingly.
* valgrind: correct program description
* valgrind: add list of common tools
* valgrind: remove general form example and add no-option example
* valgrind: replace period with colon in example 1
