update icon: twitter (original) (devicons#1912)

* altnames was also added in devicon.json

* Fix devicon.json formatting

* Update icons/twitter/twitter-original.svg

Co-authored-by: Patrik Wehrli <patrik.wehrli@gmail.com>

* remove extra newline so there's only one at eof

Remove extra newline (there were two here)

---------

Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>
Co-authored-by: Patrik Wehrli <patrik.wehrli@gmail.com>

devicon.json

@@ -10039,7 +10039,7 @@
     },
     {
         "name": "twitter",
-        "altnames": [],
+        "altnames": ["x"],
         "tags": [
             "auth"
         ],
@@ -10051,7 +10051,7 @@
                 "original"
             ]
         },
-        "color": "#1d9bf0",
+        "color": "#000",
         "aliases": [
             {
                 "base": "original",