feat: update to flutter 3.3

Author: tsinis

README.md

@@ -2,7 +2,7 @@
 
 # Steampunk Clock for Flutter Clock contest
 
-This project is **one of the winning submissions** in **Google's & Lenovo** dev/design contest, called "***Flutter Clock***" (with **over 850** valid entries from around the world). You can read more about this contest here: [flutter.dev/clock](https://flutter.dev/clock)
+This project is **one of the winning submissions** in **Google & Lenovo** dev/design contest, called "***Flutter Clock***" (with **over 850** valid entries from around the world). You can read more about this contest here: [flutter.dev/clock](https://flutter.dev/clock).
 
 ![Steampunk Clock Visualization](previews/preview.jpg)
 

analog_clock/README.md

@@ -15,7 +15,7 @@
 
 ## Description
 
-Here you will find a code base of this Steampunk Flutter Clock project and it’s guided by the contest rules, you can read more about this rules here: [flutter.dev/clock](https://flutter.dev/clock).
+Here you will find a code base of this Steampunk Flutter Clock project (with 100% test coverage) that was guided by the contest rules, you can read more about this rules here: [flutter.dev/clock](https://flutter.dev/clock).
 
 ## Licenses