docs: fix generate docs

generate_docs.sh

@@ -7,7 +7,7 @@ cp CONTRIBUTING.md docs/contributing.md
 
 # README is located on the root of the project, and index is inside of docs
 # so wee need to replace ./docs/assets references with ./assets
-sed 's/\.\/docs\/assets/\.\/assets/g' docs/index.md
+sed -i 's/\.\/docs\/assets/\.\/assets/g' docs/index.md
 
 
 # Generate Dokka documentation for the project