Refactor syntax hint in realm.properties file

Simply use a comment instead of an actual entry.

war/src/realm.properties

@@ -20,7 +20,9 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
-for-the-syntax-of-this-file: see-http://wiki.eclipse.org/Jetty/Tutorial/Realms#HashLoginService
+# For the syntax of this file see:
+# https://wiki.eclipse.org/Jetty/Tutorial/Realms#HashLoginService
+
 guest: guest
 admin: admin,admin
 alice: alice,admin