Fix comment and documentation grammar

[kovaacs]

Fix some grammar errors

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #708 (0ec3741) into master (0a7faff) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #708   +/-   ##
=======================================
  Coverage   21.08%   21.08%           
=======================================
  Files          63       63           
  Lines        8527     8527           
  Branches     1452     1452           
=======================================
  Hits         1798     1798           
  Misses       6713     6713           
  Partials       16       16           

Impacted Files	Coverage Δ
jellyfin_kodi/client.py	20.00% <ø> (ø)
jellyfin_kodi/downloader.py	21.12% <ø> (ø)
jellyfin_kodi/full_sync.py	12.71% <ø> (ø)
jellyfin_kodi/helper/lazylogger.py	63.63% <ø> (ø)
jellyfin_kodi/helper/playutils.py	12.82% <ø> (ø)
jellyfin_kodi/jellyfin/client.py	38.29% <ø> (ø)
jellyfin_kodi/monitor.py	17.14% <0.00%> (ø)
jellyfin_kodi/views.py	10.75% <ø> (ø)

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