make 's' in 'signing' lowercase

Author: raclim

translations/locales/en-US/translations.json

@@ -370,7 +370,7 @@
     "Or": "Or",
     "AlreadyHave": "Already have an account?",
     "Login": "Log In",
-    "Warning": "By Signing up, you agree to the p5.js Editor's <0>Terms of Use</0> and <1>Privacy Policy.</1>"
+    "Warning": "By signing up, you agree to the p5.js Editor's <0>Terms of Use</0> and <1>Privacy Policy.</1>"
   },
   "EmailVerificationView": {
     "Title": "p5.js Web Editor | Email Verification",