Cleanup for release:

remove some unneeded escaping of spaces "\ "
indent by 6 spaces in a few places to match the rest of the file
fix a few lines that were improperly wrapped or not wrapped to the next line
update sample rule expansion to match current state of pfctl output
fix spacing in a few places
fix a small typo found by jmc@
updated a few example rules so that they parse with current pfctl

ok henning@ jmc@

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