What this PR does / why we need it:

Just thought I'd contribute some typo fixes that I stumbled on. Nothing controversial (hopefully), just 23 simple fixes.

Use the following command to get a quick and dirty summary of the specific corrections made:

git diff HEAD^! --word-diff-regex='\w+' -U0 \
  | grep -E '\[\-.*\-\]\{\+.*\+\}' \
  | sed -r 's/.*\[\-(.*)\-\]\{\+(.*)\+\}.*/\1 \2/' \
  | sort | uniq -c | sort -n

FWIW, the typos are:

• lenght (4)
• suplied (4)
• alwaty (2)
• chechk (1)
• addes (1)
• appliyed (1)
• assigment (1)
• automattic (1)
• complient (1)
• cosumed (1)
• exists (1)
• friendy (1)
• partioned (1)
• suberesource (1)
• supercede (1)
• unparseable (1)