pyproject: adding URL and silly desc

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

pyproject.toml

@@ -3,15 +3,15 @@
 project_name = "Hello World"
 bundle = "com.example"
 version = "0.0.1"
-url = "https://example.com/helloworld"
+url = "https://git.batts.cloud/vbatts/learning-beeware"
 license = "MIT license"
 author = "Vincent Batts"
 author_email = "vbatts@hashbangbash.com"
 
 [tool.briefcase.app.helloworld]
 formal_name = "Hello World"
-description = "My first application"
-long_description = """More details about the app should go here.
+description = "yup, a first try"
+long_description = """let's see if we craft an idea from this
 """
 icon = "src/helloworld/resources/helloworld"
 sources = [