Add a missing translation for dangling entrypoints (#132)

loader/src/main/resources/lang/en_us.json

@@ -10,6 +10,9 @@
   "fml.modloading.uncaughterror": "An uncaught parallel processing error has occurred.\n\u00a77{2,exc,msg}",
   "fml.modloading.errorduringevent": "{0,modinfo,name} ({0,modinfo,id}) encountered an error while dispatching the {3} event\n\u00a77{2,exc,msg}",
   "fml.modloading.failedtoloadforge": "Failed to load NeoForge",
+
+  "fml.modloading.javafml.dangling_entrypoint": "File {4} contains mod entrypoint class \u00a76{3}\u00a7r for mod with id \u00a7e{2}\u00a7r, which does not exist or is not in the same file.\nDid you forget to update the mod id in the entrypoint?",
+
   "fml.modloading.missingdependency": "Mod \u00a7e{4}\u00a7r requires \u00a76{3}\u00a7r \u00a7o{5,vr}\u00a7r\n\u00a77Currently, \u00a76{3}\u00a7r\u00a77 is \u00a7o{6,i18n,fml.messages.artifactversion.ornotinstalled}§r\n{7,optional,§7Reason for the dependency: §r}",
   "fml.modloading.missingdependency.optional": "Mod \u00a7e{4}\u00a7r only supports \u00a73{3}\u00a7r \u00a7o{5,vr}\u00a7r\n\u00a77Currently, \u00a73{3}\u00a7r\u00a77 is \u00a7o{6}",
   "fml.modloading.incompatiblemod": "Mod \u00a7e{4}\u00a7r is §cincompatible§r with \u00a73{3}\u00a7r \u00a7o{5,vr}\u00a7r\n\u00a77Currently, \u00a73{3}\u00a7r\u00a77 is \u00a7o{6}§r\n§7The reason is:§r §o{7,i18ntranslate}§r",