chore: update examples for v13

[Fyko]

Please describe the changes this PR makes and why it should be merged: This PR updates examples for Discord.js v13. Additionally, it fixes a documentation error.

Closes #170.

Status and versioning classification:

• This PR only includes non-code changes, like changes to documentation, README, etc.

[codecov[bot]]

Codecov Report

Merging #174 (d3658c7) into main (687e0e8) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #174   +/-   ##
=======================================
  Coverage   73.84%   73.84%           
=======================================
  Files          21       21           
  Lines         906      906           
  Branches      221      227    +6     
=======================================
  Hits          669      669           
  Misses        235      235           
  Partials        2        2           

Impacted Files	Coverage Δ
src/joinVoiceChannel.ts	100.00% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 687e0e8...d3658c7. Read the comment docs.

[amishshah]

@Fyko could you remove the unnecessary intent mentioned above and also move command deployment to its own script that can be run separately?

[imranbarbhuiya]

Why it's not getting merged?