docs: fix linebreak-style examples (#18262)

fix `linebreak-style` examples

docs/src/rules/linebreak-style.md

@@ -52,6 +52,7 @@ var a = 'a', // \n
 function foo(params) { // \n
     // do stuff \n
 }// \n
+
 ```
 
 :::
@@ -66,6 +67,7 @@ Examples of **incorrect** code for this rule with the `"windows"` option:
 /*eslint linebreak-style: ["error", "windows"]*/
 
 var a = 'a'; // \n
+
 ```
 
 :::
@@ -75,14 +77,15 @@ Examples of **correct** code for this rule with the `"windows"` option:
 ::: correct
 
 ```js
-/*eslint linebreak-style: ["error", "windows"]*/
-
+/*eslint linebreak-style: ["error", "windows"]*/ // \r\n
+// \r\n
 var a = 'a', // \r\n
     b = 'b'; // \r\n
 // \r\n
 function foo(params) { // \r\n
     // do stuff \r\n
 } // \r\n
+
 ```
 
 :::

docs/tools/code-block-utils.js

@@ -14,11 +14,14 @@
 function docsExampleCodeToParsableCode(code) {
     return code
 
-        // Remove trailing newline and presentational `⏎` characters
-        .replace(/⏎(?=\n)/gu, "")
+        // Code blocks always contain an extra line break at the end, so remove it.
+        .replace(/\n$/u, "")
 
-        // Code blocks always contain extra line breaks, so remove them.
-        .replace(/\n$/u, "");
+        // Replace LF line breaks with CRLF after `\r\n` sequences.
+        .replace(/(?<=\\r\\n)\n/gu, "\r\n")
+
+        // Remove presentational `⏎` characters at the end of lines.
+        .replace(/⏎(?=\n)/gu, "");
 }
 
 module.exports = {