Fix typo in a header name

Author: reginaldl

src/technologies/f.json

@@ -371,7 +371,7 @@
       "server": "Fastly",
       "x-fastly-origin": "",
       "x-fastly-request-id": "",
-      "x-via-fastly:": ""
+      "x-via-fastly": ""
     },
     "icon": "Fastly.svg",
     "pricing": [
@@ -2436,4 +2436,4 @@
     "scriptSrc": "/fullPage\\.js(?:/([\\d\\.]+)/)?\\;version:\\1",
     "website": "https://github.com/alvarotrigo/fullpage.js"
   }
-}
+}