Improve DSC documentation (#42554)

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request

This documentation enhances the DSC documentation by incorporating
reference documents and providing examples.

Closes #42552.

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [x] Closes: #xxx
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

---------

Co-authored-by: Niels Laute <niels.laute@live.nl>

.github/actions/spell-check/expect.txt

@@ -35,6 +35,7 @@ Allman
 ALLOWUNDO
 ALLVIEW
 ALPHATYPE
+altkey
 AModifier
 amr
 ANDSCANS
@@ -456,6 +457,9 @@ fdx
 FErase
 fesf
 FFFF
+fffffffzzz
+FInc
+FFh
 Figma
 FILEEXPLORER
 FILEFLAGS
@@ -577,6 +581,7 @@ HIBYTE
 hicon
 HIDEWINDOW
 Hif
+highcontrast
 highlightbackground
 highlightthickness
 HIMAGELIST
@@ -850,6 +855,8 @@ MDL
 mdtext
 mdtxt
 mdwn
+measuretool
+mccs
 meme
 memicmp
 MENUITEMINFO
@@ -893,6 +900,7 @@ MONITORINFOEX
 MONITORINFOEXW
 monitorinfof
 MOUSEACTIVATE
+mousecrosshairs
 MOUSEDATA
 MOUSEEVENTF
 MOUSEHWHEEL
@@ -924,6 +932,7 @@ mstsc
 msvcp
 MT
 MTND
+multimonitor
 MULTIPLEUSE
 multizone
 muxc
@@ -1017,6 +1026,9 @@ NORMALDISPLAY
 NORMALUSER
 NOSEARCH
 NOSENDCHANGING
+NOSIZE
+notdefault
+Nosize
 NOTHOUSANDS
 NOTICKS
 NOTIFICATIONSDLL
@@ -1107,6 +1119,7 @@ PCIDLIST
 PCTSTR
 PCWSTR
 PDEVMODE
+PDFs
 pdisp
 PDLL
 pdo
@@ -1155,6 +1168,10 @@ Pokedex
 Popups
 POPUPWINDOW
 POSITIONITEM
+powerocr
+POWERBROADCAST
+powerdisplay
+POWERDISPLAYMODULEINTERFACE
 POWERRENAMECONTEXTMENU
 powerrenameinput
 POWERRENAMETEST
@@ -1518,6 +1535,9 @@ STYLECHANGING
 subkeys
 sublang
 SUBMODULEUPDATE
+subresource
+suntimes
+swp
 sug
 Superbar
 sut
@@ -1736,6 +1756,7 @@ wdm
 wdp
 wdupenv
 webbrowsers
+webdev
 webpage
 websites
 wekyb