[docs] Various grammar fixes, fix dead links, update deps.md, merge RDOC into Debug.md (#4315)

Signed-off-by: lizzie <[email protected]>

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

updates deps.md (freebsd had a package that didnt exist, oops)
netbsd also had outdated packages

moved windows caveats into the user guide (because well, those are user stuff, not build caveats)

MANY redundant wording removals (especially on dynarmic)

proper capitalization of Eden, Dynarmic, Amiibo, and CLion

fixed discord link on metainfo as well
also fixed file associations as well otherwise installed eden wont have icon over NSP/XCI/etc files

"please" is filler

fixes a HANDFUL of dead links as well

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4315
Reviewed-by: crueter <[email protected]>
Reviewed-by: CamilleLaVey <[email protected]>

README.md

@@ -15,7 +15,7 @@
   <br>
 </h1>
 
-<h4 align="center"><b>Eden</b> is a free and opensource (FOSS) Switch 1 emulator started by developer Camille LaVey.
+<h4 align="center"><b>Eden</b> is a free and open-source (FOSS) Switch 1 emulator started by developer Camille LaVey.
 <br>
 Written in C++, with builds for Windows, Linux, macOS, Android, FreeBSD and more.
 </h4>