documentation: Update Note Protocol

Using /// rather than simply //.

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>

Sources/P4Lang/Declarations.swift

@@ -44,7 +44,7 @@ public struct Declaration: P4DataType {
   }
 
   public func def() -> any Common.P4DataValue {
-    // TODO: Is a default of the extern'd type the right way to go?
+    /// TODO: Is a default of the extern'd type the right way to go?
     return self.identifier.type.dataType().def()
   }
 

Sources/P4Lang/Expressions.swift

@@ -141,7 +141,7 @@ public struct FunctionCall {
   public init(_ callee: P4FFI, withArguments arguments: ArgumentList) {
     self.callee = (.none, callee)
     self.arguments = arguments
-    // ASSUME: That the FFI has been checked and the type is always a function declaration.
+    /// ASSUME: That the FFI has been checked and the type is always a function declaration.
     self.return_type = (callee.type().dataType() as! FunctionDeclaration).tipe.dataType()
   }
 }