Update supported Wildfly servers

Author: CodeShakingSheep

README.md

@@ -31,7 +31,7 @@ This extension depends on VSCode RSP UI Extension which is going to be installed
    * `"wildfly.server.config.file"` - name of the configuration file to be used for the current Jboss/Wildfly instance. The file has to be stored in the same folder as the default standalone.xml file. (e.g "wildfly.server.config.file": "newconfigfile.xml")
 
 ### Supported Servers
-   * Wildfly [8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24]
+   * Wildfly [8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28]
    * Red Hat Enterprise Application Platform (EAP) [4.3 | 5.0 | 6.0 | 6.1 | 6.2 | 6.3 | 6.4 | 7.0 | 7.1 | 7.2 | 7.3| 7.4]
    * Minishift / Red Hat Container Development Kit (CDK) / Red Hat CodeReady Containers (CRC) binaries