replaced some more icons with svg

src/_data/services.json

@@ -2,7 +2,7 @@
   {
     "id": "searx",
     "name": "Searx",
-    "icon": "fas fa-search",
+    "si": "search",
     "url": "https://searx.sp-codes.de",
     "status": "https://searx.sp-codes.de",
     "summary": {
@@ -58,7 +58,7 @@
   {
     "id": "connectivitycheck",
     "name": "Captive Portal Check",
-    "icon": "fas fa-wifi",
+    "si": "wifi",
     "status": "https://connectivitycheck.sp-codes.de/generate204",
     "summary": {
       "de": "Eine datenschutzfreundliches Tool, um Anmeldeseiten in WLAN-Netzwerken zu erkennen.",
@@ -68,7 +68,7 @@
   {
     "id": "firefox-sync",
     "name": "Firefox Sync",
-    "icon": "fab fa-firefox-browser",
+    "si": "firefox-browser",
     "status": "https://sync.firefox.sp-codes.de/token/",
     "summary": {
       "de": "Ein Service um Firefox Einstellungen, Lesezeichen, offene Tabs und vieles mehr über verschiedene Geräte zu synchronisieren.",
@@ -78,7 +78,7 @@
   {
     "id": "shields",
     "name": "Shields",
-    "icon": "fas fa-tags",
+    "si": "tags",
     "url": "https://shields.sp-codes.de",
     "status": "https://shields.sp-codes.de",
     "summary": {
@@ -89,7 +89,7 @@
   {
     "id": "translate",
     "name": "LibreTranslate",
-    "icon": "fas fa-language",
+    "si": "language",
     "url": "https://translate.sp-codes.de",
     "status": "https://translate.sp-codes.de",
     "beta": true,
@@ -101,7 +101,7 @@
   {
     "id": "invidious",
     "name": "Invidious",
-    "icon": "fab fa-youtube",
+    "si": "youtube",
     "url": "https://invidious.sp-codes.de",
     "status": "https://invidious.sp-codes.de",
     "summary": {
@@ -112,7 +112,7 @@
   {
     "id": "nitter",
     "name": "Nitter",
-    "icon": "fab fa-twitter",
+    "si": "twitter",
     "url": "https://nitter.sp-codes.de",
     "status": "https://nitter.sp-codes.de",
     "summary": {