Spelling errors

Author: GalinBistrev2

.github/actions/spelling/allow/terms.txt

@@ -51,6 +51,7 @@ consteval
 cppyy
 cytokine
 cytokines
+doxygen
 gitlab
 gpu
 gridlay

_posts/2025-23-09-Supporting-AD-in-CMS-Combine-likelihood-scans.md

@@ -71,7 +71,7 @@ offering improved performance.
 Over the course of the project, several major tasks were completed to achieve the stated objectives:
 
 - Imported the `RooMultiPdf` class in RooFit from Combine, enabling 
-switching between multiple PDFs, applying statistical penalties, 
+switching between multiple PDF-s, applying statistical penalties, 
 and supporting code generation for AD.
 
 - The implementation of the new class was made to be supported by