Use s-upper-camel-case in useState snippet

Author: sei40kr

+web-react-mode/useState

@@ -3,8 +3,5 @@
 # name: useState
 # key: useState
 # --
-const [${1:state}, set${1:$(if (>= (length yas-text) 1)
-                             (concat (upcase (substring yas-text 0 1))
-                                     (substring yas-text 1))
-                           "")}] = setState(${2:initialState});
+const [${1:state}, set${1:$(s-upper-camel-case yas-text)}] = setState(${2:initialState});
 $0