Fix OIDC capability string

Author: HerrDerb

core/deployment/src/main/java/io/quarkus/deployment/Capability.java

@@ -106,7 +106,7 @@ public interface Capability {
     String OPENSHIFT = QUARKUS_PREFIX + "openshift";
     String OPENSHIFT_CLIENT = OPENSHIFT + ".client";
 
-    String OIDC = QUARKUS_PREFIX + ".oidc";
+    String OIDC = QUARKUS_PREFIX + "oidc";
 
     /**
      * Presence of an io.opentracing tracer (for example, Jaeger).