iox-#743 Fix spelling mistakes in docu, adjust waitset examples

[elfenpiff]

Pre-Review Checklist for the PR Author

1. Code follows the coding style of CONTRIBUTING.md
2. Tests follow the best practice for testing
3. Branch follows the naming format (iox-#123-this-is-a-branch)
4. Commits messages are according to this guideline
   • Commit messages have the issue ID (iox-#123 commit text)
   • Commit messages are signed (git commit -s)
   • Commit author matches Eclipse Contributor Agreement (and ECA is signed)
5. Update the PR title
   • Follow the same conventions as for commit messages
   • Link to the relevant issue
6. Relevant issues are linked
7. Add sensible notes for the reviewer
8. All checks have passed (except task-list-completed)
9. Assign PR to reviewer

Notes for Reviewer

Checklist for the PR Reviewer

• Commits are properly organized and messages are according to the guideline
• Code according to our coding style and naming conventions
• Unit tests have been written for new behavior
• Public API changes are documented via doxygen
• Copyright owner are updated in the changed files
• PR title describes the changes

Post-review Checklist for the PR Author

1. All open points are addressed and tracked via issues

References

• Closes partly Improve documentation and website for v2.0 #743

[codecov]

Codecov Report

Merging #849 (3c685cf) into master (eb02564) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #849      +/-   ##
==========================================
+ Coverage   75.05%   75.06%   +0.01%     
==========================================
  Files         332      332              
  Lines       11863    11864       +1     
  Branches     2001     2001              
==========================================
+ Hits         8904     8906       +2     
  Misses       2190     2190              
+ Partials      769      768       -1     

Flag	Coverage Δ
unittests	73.94% <ø> (+0.01%)	⬆️
unittests_timing	30.84% <ø> (+0.30%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
iceoryx_posh/source/roudi/process_manager.cpp	60.05% <0.00%> (-0.30%)	⬇️
iceoryx_posh/source/roudi/memory/memory_block.cpp	66.66% <0.00%> (ø)
...osh/source/roudi/memory/port_pool_memory_block.cpp	92.85% <0.00%> (ø)
...include/iceoryx_posh/roudi/memory/memory_block.hpp	100.00% <0.00%> (ø)
...iceoryx_posh/roudi/memory/generic_memory_block.hpp	100.00% <0.00%> (ø)
...h/internal/roudi/memory/port_pool_memory_block.hpp	100.00% <0.00%> (ø)
iceoryx_hoofs/source/concurrent/loffli.cpp	85.29% <0.00%> (+5.88%)	⬆️