Fixed typo

Author: artem-v

vault/src/main/java/io/scalecube/security/vault/VaultServiceTokenSupplier.java

@@ -119,7 +119,7 @@ public Builder serviceTokenNameBuilder(
       return this;
     }
 
-    public VaultServiceTokenSupplier builder() {
+    public VaultServiceTokenSupplier build() {
       return new VaultServiceTokenSupplier(this);
     }
   }