docs: fix regexps incorrectly being called global

[RedGuy12]

Please describe the changes this PR makes and why it should be merged:

These RegExes are not global, but the docs say they are.

Status and versioning classification:

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

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

1 Ignored Deployment

Name	Status	Preview	Updated
discord-js	⬜️ Ignored (Inspect)		Sep 15, 2022 at 4:25PM (UTC)

[codecov]

Codecov Report

Merging #8624 (8be4466) into main (4ffdada) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #8624      +/-   ##
==========================================
+ Coverage   86.47%   86.50%   +0.03%     
==========================================
  Files          87       87              
  Lines        8675     8673       -2     
  Branches     1110     1110              
==========================================
+ Hits         7502     7503       +1     
+ Misses       1131     1128       -3     
  Partials       42       42              

Flag	Coverage Δ
builders	100.00% <100.00%> (ø)
collection	100.00% <ø> (ø)
proxy	74.10% <ø> (ø)
rest	91.99% <ø> (ø)
utilities	100.00% <ø> (ø)
voice	63.86% <ø> (ø)
ws	60.47% <ø> (+0.06%)	⬆️

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

Impacted Files	Coverage Δ
packages/collection/src/collection.ts	100.00% <ø> (ø)
packages/voice/src/DataStore.ts	98.14% <ø> (ø)
packages/voice/src/networking/Networking.ts	3.18% <ø> (ø)
packages/voice/src/networking/VoiceUDPSocket.ts	90.47% <ø> (ø)
packages/voice/src/networking/VoiceWebSocket.ts	0.00% <ø> (ø)
packages/voice/src/receive/SSRCMap.ts	86.20% <ø> (ø)
packages/voice/src/receive/SpeakingMap.ts	100.00% <ø> (ø)
packages/voice/src/util/Secretbox.ts	33.33% <ø> (ø)
...trategies/context/WorkerContextFetchingStrategy.ts	92.00% <ø> (-0.16%)	⬇️
.../src/strategies/sharding/WorkerShardingStrategy.ts	95.87% <ø> (-0.02%)	⬇️
... and 4 more

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more