docs: tweak wording

src/content/docs/development/philosophy.mdx

@@ -17,7 +17,7 @@ We believe a good software architecture is defined by the following qualities:
 - 💪 Consistent: offer strong opinions to complex problems, like state management.
 - 🧘‍♀️ Flexible: enable features to be easily refactored or replaced.
 - 🤓 Approachable: facilitate rapid onboarding and training, even for junior developers.
-- 🧪 Testable: make it easy to achieve 100% unit test coverage.
+- 🧪 Testable: easy to create automated tests and achieve 100% code coverage.
 - 🏎️ Performant: execute quickly by default.
 - 📱 Multiplatform: build one app that works on every platform.
 
@@ -33,7 +33,7 @@ To build complex, enterprise-grade software, we need to find a way to make doing
 
 ## 🍰 Layered Architecture
 
-For client applications, we follow a variation of layered architecture consisting of 3 main layers: presentation, business logic, and data.
+For client applications, we follow a variation of [layered architecture][very-good-layered-architecture] consisting of 3 main layers: presentation, business logic, and data.
 
 By clearly differentiating between architectural boundaries, we drastically reduce the amount of knowledge required to contribute to a single layer, as well as improve the code's readability and reduce the cognitive load required to maintain it. Separating layers allows us to test each piece of code individually (i.e., unit testing).
 
@@ -166,3 +166,4 @@ As a team, we have many cumulative years of experience with apps of all kinds, f
 [declarative]: https://stackoverflow.com/a/15382180
 [time-complexity]: https://en.wikipedia.org/wiki/Time_complexity
 [pub.dev]: https://pub.dev
+[very-good-layered-architecture]: https://verygood.ventures/blog/very-good-flutter-architecture