Deprecated features/members found in dart files

[ishitakapoor26]

• On going through the Bahmini code, various deprecated members are found in the dart file.

• I have fixed the issues, so please assign me this issue.

• Removing typos in the repository.

• Below I have attached the screenshot of the deprecated members.

Error:

• 'bodyText1' is deprecated and shouldn't be used. This feature was deprecated after v3.1.0-0.0.pre.
• 'headline6' is deprecated and shouldn't be used. This feature was deprecated after v3.1.0-0.0.pre.
• 'subtitle1' is deprecated and shouldn't be used. This feature was deprecated after v3.1.0-0.0.pre.
• 'caption' is deprecated and shouldn't be used. This feature was deprecated after v3.1.0-0.0.pre.

I am looking forward to contributing to #3 under Code4GovTech.
Thank you!

[angshu]

Thanks a lot @ishitakapoor26. Since June, we have upgraded to Flutter 3 and I think most of the deprecated usages have been resolved. Closing this issue. However if you do find others, please let us know