Fix minor typo (#671)

* Fix typo: iff → if

* Add missing `>`

Author: konomae

Sources/ComposableArchitecture/Internal/Breakpoint.swift

@@ -1,4 +1,4 @@
-/// Raises a debug breakpoint iff a debugger is attached.
+/// Raises a debug breakpoint if a debugger is attached.
 @inline(__always) func breakpoint(_ message: @autoclosure () -> String = "") {
   #if DEBUG
     // https://github.com/bitstadium/HockeySDK-iOS/blob/c6e8d1e940299bec0c0585b1f7b86baf3b17fc82/Classes/BITHockeyHelper.m#L346-L370

Sources/ComposableArchitecture/SwiftUI/Binding.swift

@@ -209,7 +209,7 @@ extension Reducer {
   /// the ``binding(action:)`` method:
   ///
   /// ```swift
-  /// let settingsReducer = Reducer<SettingsState, SettingsAction, SettingsEnvironment {
+  /// let settingsReducer = Reducer<SettingsState, SettingsAction, SettingsEnvironment> {
   ///   ...
   /// }
   /// .binding(action: /SettingsAction.binding)