Improve style.md.

Partial #592

Signed-off-by: Ross Goldberg <484615+rgoldberg@users.noreply.github.com>

docs/style.md

@@ -5,7 +5,9 @@
   - Use `script/lint` to look for these before committing.
   - Note that [two trailing spaces](https://gist.github.com/shaunlebron/746476e6e7a4d698b373)
      is intentional in markdown documents to create a line break like `<br>`, so these should _not_ be removed.
-- End each file with a [newline character](https://unix.stackexchange.com/questions/18743/whats-the-point-in-adding-a-new-line-to-the-end-of-a-file#18789).
+- End each file with a [newline character](
+    https://unix.stackexchange.com/questions/18743/whats-the-point-in-adding-a-new-line-to-the-end-of-a-file#18789
+  ).
 
 ## Swift
 
@@ -14,13 +16,13 @@
 - Avoid [force unwrapping optionals](https://blog.timac.org/2017/0628-swift-banning-force-unwrapping-optionals/)
 with `!` in production code
   - Production code is what gets shipped with the app. Basically, everything under the
-  [`mas-cli/`](https://github.com/mas-cli/mas/tree/main/mas-cli) folder.
+  [`Sources/mas`](https://github.com/mas-cli/mas/tree/main/Sources/mas) folder.
   - However, force unwrapping is **encouraged** in tests for less code and tests
   _should_ break when any expected conditions aren't met.
 - Prefer `struct`s over `class`es wherever possible
 - Default to marking classes as `final`
 - Prefer protocol conformance to class inheritance
-- Break long lines after 120 characters
+- Break lines at 120 characters
 - Use 4 spaces for indentation
 - Use `let` whenever possible to make immutable variables
 - Name all parameters in functions and enum cases
@@ -28,10 +30,7 @@ with `!` in production code
 - Let the compiler infer the type whenever possible
 - Group computed properties below stored properties
 - Use a blank line above and below computed properties
-- Group methods into specific extensions for each level of access control
+- Group functions into separate extensions for each level of access control
 - When capitalizing acronyms or initialisms, follow the capitalization of the first letter.
 - When using `Void` in function signatures, prefer `()` for arguments and `Void` for return types.
-- Prefer strong `IBOutlet` references.
 - Avoid evaluating a weak reference multiple times in the same scope. Strongify first, then use the strong reference.
-- Prefer to name `IBAction` and target/action methods using a verb describing the action it will trigger, instead
-  of the user action (e.g., `edit:` instead of `editTapped:`)