Fix typo in constant names

lib/pages/RegisterAccount.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+import 'package:zontreck/Constants.dart';
+
+class RegisterAccountPage extends StatefulWidget {
+  RegisterAccountPage({super.key});
+
+  @override
+  RegisterAccountState createState() => RegisterAccountState();
+}
+
+class RegisterAccountState extends State<RegisterAccountPage> {
+  RegisterAccountState();
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text("OpenSim - Register Account"),
+        backgroundColor: Constants.TITLEBAR_COLOR,
+      ),
+      body: Padding(
+        padding: EdgeInsets.all(8),
+        child: SingleChildScrollView(
+          child: Column(
+            children: [],
+          ),
+        ),
+      ),
+    );
+  }
+}