Fix windows build failure

Author: prakanth97

.gitattributes

@@ -7,3 +7,5 @@
 # These are Windows script files and should use crlf
 *.bat           text eol=crlf
 
+# Ensure all Java files use LF.
+*.java eol=lf

ballerina/tests/from_json_string_test.bal

@@ -1368,16 +1368,15 @@ isolated function testUnalignedJsonContent() returns error? {
 {
                             "a"
                     : 
-                    "h
-ello",
+                    "hello",
                             "b": 
                     1
         }`;
     record {|
         string a;
         int b;
     |} val = check parseString(jsonStr);
-    test:assertEquals(val.a, "h\nello");
+    test:assertEquals(val.a, "hello");
     test:assertEquals(val.b, 1);
 }