Use camelCase for XML acronym

Author: atorralba

java/ql/test/TestUtilities/InlineExpectationsTestPrivate.qll

@@ -21,7 +21,7 @@ private class KtExpectationComment extends KtComment, ExpectationComment {
   override string getContents() { result = this.getText().suffix(2).trim() }
 }
 
-private class XMLExpectationComment extends ExpectationComment instanceof XMLComment {
+private class XmlExpectationComment extends ExpectationComment instanceof XMLComment {
   override string getContents() { result = this.(XMLComment).getText().trim() }
 
   override Location getLocation() { result = this.(XMLComment).getLocation() }

java/ql/test/library-tests/xml/XMLTest.expected

@@ -0,0 +1,2 @@
+| test.xml:4:5:4:32 | attribute=value | Unexpected result: hasXmlResult= |
+| test.xml:5:29:5:52 |  $ hasXmlResult  | Missing result:hasXmlResult= |

java/ql/test/library-tests/xml/XMLTest.ql

@@ -1,8 +1,8 @@
 import semmle.code.xml.XML
 import TestUtilities.InlineExpectationsTest
 
-class XMLTest extends InlineExpectationsTest {
-  XMLTest() { this = "XMLTest" }
+class XmlTest extends InlineExpectationsTest {
+  XmlTest() { this = "XmlTest" }
 
   override string getARelevantTag() { result = "hasXmlResult" }