Fix various typos.

[cfi-gb]

Fix various typos found by codespell 1.14

codespell . -S ".git,*.gif,*.png"

[codecov]

Codecov Report

Merging #15 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master      #15   +/-   ##
=======================================
  Coverage   14.73%   14.73%           
=======================================
  Files           9        9           
  Lines        2029     2029           
=======================================
  Hits          299      299           
  Misses       1730     1730

Impacted Files	Coverage Δ
gvm/protocols/gmpv7.py	0% <ø> (ø)	⬆️
gvm/xml.py	19.55% <ø> (ø)	⬆️
gvm/connections.py	0% <0%> (ø)	⬆️

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