fix: ensure lint rule works with Windows line endings

Author: Planeshifter

lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-leading-description-sentence/lib/main.js

@@ -29,6 +29,7 @@ var capitalize = require( '@stdlib/string/capitalize' );
 var isCapitalized = require( '@stdlib/assert/is-capitalized' );
 var endsWith = require( '@stdlib/string/ends-with' );
 var findJSDoc = require( '@stdlib/_tools/eslint/utils/find-jsdoc' );
+var reEOL = require( '@stdlib/regexp/eol' );
 var DEFAULTS = require( './defaults.json' );
 
 
@@ -90,7 +91,7 @@ function main( context ) {
 		if ( isObject( jsdoc ) ) {
 			ast = parseJSDoc( jsdoc.value, DOPTS );
 			desc = ast.description;
-			idx = desc.indexOf( '\n' );
+			idx = desc.search( reEOL.REGEXP );
 			if ( idx !== -1 ) {
 				// Only first line contains the description:
 				desc = desc.substr( 0, idx );