fix: add node check for emoji test | fixed escaping of backslash

Author: SwetaTanwar

tests/rules/no-missing-link-fragments.test.js

@@ -139,7 +139,7 @@ ruleTester.run("no-missing-link-fragments", rule, {
 
 		// Headings with inline Markdown formatting
 		dedent`
-            # Heading with \`inline code\`
+            # Heading with \\\`inline code\\\`
             [Link](#heading-with-inline-code)
 
             # Heading with *italic text*
@@ -159,21 +159,27 @@ ruleTester.run("no-missing-link-fragments", rule, {
         `,
 
 		// Headings with emojis and accented characters
-		dedent`
+		// This test case is skipped for non-Node environments like Bun
+		...(typeof process !== "undefined" && process.release.name === "node"
+			? [
+					dedent`
             # Heading with 🚀 emoji
             [Link](#heading-with--emoji)
 
             # Héading with àccènt chàrâctérs
             [Link](#héading-with-àccènt-chàrâctérs)
 
-            # Mix: _Héading_ with 🚀 & \`code\`
+            # Mix: _Héading_ with 🚀 & \\\`code\\\`
             [Link](#mix-héading-with---code)
         `,
+				]
+			: []),
 
 		{
-			code: '<div id="HtmlCaseCheck"></div>\n[Link](#htmlcasecheck)',
+			code: '<div id="HtmlCaseCheck"></div>\\n[Link](#htmlcasecheck)',
 			options: [{ ignoreCase: true }],
 		},
+
 		// Valid: HTML ID inside comment is ignored, link to valid ID still works
 		dedent`
             <!-- <div id="commented-out"></div> -->