update spellchecker

Author: ScottyPoi

config/cspell-md.json

@@ -328,6 +328,7 @@
     "Unsnappy",
     "unsnappy",
     "ethportal",
-    "bytevector"
+    "bytevector",
+    "eraSync"
   ]
 }

config/cspell-ts.json

@@ -630,6 +630,7 @@
     "unsnappy",
     "ethportal",
     "bytevector",
-    "blobschedule"
+    "blobschedule",
+    "eraSync"
   ]
 }