Merge branch 'sfcgeorge-patch-1' into gh-pages

* sfcgeorge-patch-1:
  For consistency end each line with full stop.
  Add mention of alternate Y behaviour from :help.
  Removed misplaced example.
  Add mention of capital T for backwards.
  Fix marks.
  Remove unnecessary example that wasn't used in K.
  Improve J and formatting.
  Improve mnemonics for G.
  Explain E vs e difference.
  Change D wording to be more mnemonic.
  Improve whitespace formatting.
  Correct C and improve wording
  Correct B
Fix things.
Add info about backtick to m.

Added a description of the difference between backtick and single quote.
Character escaped backtick in description.

Changed some examples to use backtick, using space escaping.