replace custom properties with additionalProperty

Author: khadni

src/utils/structuredData.ts

@@ -538,10 +538,6 @@ export function generateTechArticle(
     ...(technicalProperties.length > 0 && {
       additionalProperty: technicalProperties,
     }),
-    // Add standard programming language property if detected
-    ...(programmingLanguages.length > 0 && {
-      programmingLanguage: programmingLanguages,
-    }),
     // Add technical article specific properties with product info
     about: {
       "@type": "Thing",
@@ -654,10 +650,6 @@ export function generateHowTo(
     ...(technicalProperties.length > 0 && {
       additionalProperty: technicalProperties,
     }),
-    // Add standard programming language property if detected
-    ...(programmingLanguages.length > 0 && {
-      programmingLanguage: programmingLanguages,
-    }),
     about: {
       "@type": "Thing",
       name: product ? `${product} Development` : "Smart Contract Development",