Rectified flutter GETTING_STARTED.md

Removed phone number from account.create() function as it does not accept it.

docs/sdks/flutter/GETTING_STARTED.md

@@ -105,7 +105,7 @@ When trying to connect to Appwrite from an emulator or a mobile device, localhos
 Account account = Account(client);
 final user = await account
   .create(
-    userId: ID.unique(), email: "email@example.com", phone: "+123456789", password: "password", name: "Walter O'Brien"
+    userId: ID.unique(), email: "email@example.com", password: "password", name: "Walter O'Brien"
   );
 ```
 
@@ -130,7 +130,7 @@ void main() {
 
   final user = await account
     .create(
-      userId: ID.unique(), email: "email@example.com", phone: "+123456789", password: "password", name: "Walter O'Brien"
+      userId: ID.unique(), email: "email@example.com", password: "password", name: "Walter O'Brien"
     );
 }
 ```
@@ -142,7 +142,7 @@ The Appwrite Flutter SDK raises `AppwriteException` object with `message`, `type
 Account account = Account(client);
 
 try {
-  final user = await account.create(userId: ID.unique(), email: "email@example.com", phone: "+123456789", password: "password", name: "Walter O'Brien");
+  final user = await account.create(userId: ID.unique(), email: "email@example.com", password: "password", name: "Walter O'Brien");
   print(user.toMap());
 } on AppwriteException catch(e) {
   //show message to user or do other operation based on error as required