Update x-client-SKU

Author: sgonzalezMSFT

src/main/java/com/microsoft/aad/msal4j/ClientDataHttpHeaders.java

@@ -31,7 +31,7 @@
 final class ClientDataHttpHeaders {
 
     public final static String PRODUCT_HEADER_NAME = "x-client-SKU";
-    public final static String PRODUCT_HEADER_VALUE = "java";
+    public final static String PRODUCT_HEADER_VALUE = "MSAL.Java";
 
     public final static String PRODUCT_VERSION_HEADER_NAME = "x-client-VER";
     public final static String PRODUCT_VERSION_HEADER_VALUE = getProductVersion();