Fix typos in the rest of the codebase

[luzpaz]

Description

Fix typos in the rest of the codebase
Follow up to:
21cfcec
5d359a8

Found via codespell -q 3 -S *.po,*.pot,*.utf8,ChangeLog,./src/external,./plugins/RemoteControl/webroot/js -L anonymus,bu,ded,dout,eyt,fiter,inout,lod,maka,mane,nd,ned,previousy,regio,sav,ser,serie,som,statics,te,tht,ue,unter

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• This change requires a documentation update
• Housecleaning

How Has This Been Tested?

n/a

Checklist:

• My code follows the code style of this project.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (header file)
• I have updated the respective chapter in the Stellarium User Guide
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[github-actions]

Great PR! Please pay attention to the following items before merging:

Files matching guide/**:

• Did you remember to update screenshots to match new updates?
• Did you remember to grammar check in changed part of documentation?

Files matching skycultures/**:

• Did you remember to update po/stellarium-skycultures/POFILES.in file respectively to changes in sky cultures?
• Did you remember to update skycultures/CMakeLists.txt and skycultures/YOUR-SKYCULTURE-FOLDER/CMakeLists.txt files respectively to changes in sky cultures?
• Did you remember to update util/skycultures/po4a.config file respectively to changes in sky cultures?
• Did you remember to define classification parameter in sky cultures (see info.ini file)?
• Did you remember to define license parameter in sky cultures (see info.ini file)?
• Did you remember to define region paramater in sky culture (see info.ini file)?

This is an automatically generated QA checklist based on modified files

[gzotti]

OK, almost done. I had a few of these on my radar, thanks for collecting them!

[alex-w]

@luzpaz please resolve finded issues

[luzpaz]

Will do so this week

[luzpaz]

Apologies, should be fixed in bb8bd66

[github-actions]

Hello @luzpaz!

Please check the fresh version (development snapshot) of Stellarium:
https://github.com/Stellarium/stellarium-data/releases/tag/weekly-snapshot

[github-actions]

Hello @luzpaz!

Please check the latest stable version of Stellarium:
https://github.com/Stellarium/stellarium/releases/latest