Potential fix for code scanning alert no. 11: Replacement of a substring with itself

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: sebastienfontaine

src/content.js

@@ -61,7 +61,7 @@ export function getTextBySelector(selector) {
 		const toSafe = (s) =>
 			typeof CSS !== 'undefined' && CSS.escape
 				? CSS.escape(s)
-				: s.replace(/[\"]/g, '$&').replace(/]/g, ']');
+				: s.replace(/[\"]/g, '$&').replace(/]/g, '\\]');
 
 		const modifiedParts = parts.map((part) => {
 			if (!part.includes('*')) return part;