Add words that are failing spelling

Author: Trenly

.github/actions/spelling/allow.txt

@@ -10,13 +10,15 @@ bcdboot
 checkboxes
 cla
 clonemedium
+Cloudflight
 codeowner
 codeowners
 Contoso
 diffs
 DISM
 dism
 distro
+dsc
 Entra
 Esco
 ESRP
@@ -27,6 +29,7 @@ fnt
 ftp
 github
 GPT
+HKLM
 Homeserver
 homeservers
 https
@@ -68,6 +71,8 @@ ranhpa
 ranpha
 redirector
 Redistributables
+restsource
+rewinged
 Runtimes
 russellbanks
 screenshots
@@ -81,6 +86,7 @@ Testplan
 toolset
 Trenly
 ttc
+UAC
 ubuntu
 UEFI
 unassign