Uppercase 'Slack'

locales/en.json

@@ -1,6 +1,6 @@
 {
-	"HEADER": "Enter your email below to join %s on slack!",
+	"HEADER": "Enter your email below to join %s on Slack!",
 	"ENTER_EMAIL": "Enter Your Email Address",
 	"ENTER_TOKEN": "Enter the invite token you were given",
 	"TITLE": "Join the %s community on Slack!"
-}
+}