Add explitly only the DOT instead of allowing all characters except the colon

Author: alexanderkaiser

src/main/java/io/appium/java_client/remote/options/W3CCapabilityKeys.java

@@ -23,7 +23,7 @@
 public class W3CCapabilityKeys implements Predicate<String> {
     public static final W3CCapabilityKeys INSTANCE = new W3CCapabilityKeys();
     private static final Predicate<String> ACCEPTED_W3C_PATTERNS = Stream.of(
-                    "^[^:]+:.*$",
+                    "^[\\w-\\.]+:.*$",
                     "^acceptInsecureCerts$",
                     "^browserName$",
                     "^browserVersion$",

src/test/java/io/appium/java_client/remote/options/BaseOptionsTest.java

@@ -15,7 +15,6 @@ class BaseOptionsTest {
       "browserName, browserName",
       "digital.ai:accessKey, digital.ai:accessKey",
       "digital-ai:accessKey, digital-ai:accessKey",
-      "<VENDOR-KEY>:<CAP-NAME>:<SUB-CAP-NAME>, <VENDOR-KEY>:<CAP-NAME>:<SUB-CAP-NAME>",
       "digital-ai:my_custom-cap:xyz, digital-ai:my_custom-cap:xyz",
       "digital-ai:my_custom-cap?xyz, digital-ai:my_custom-cap?xyz",
   })