Fix typo

Author: grynspan

Sources/TestingMacros/Support/ConditionArgumentParsing.swift

@@ -329,17 +329,17 @@ private final class _ContextInserter<C, M>: SyntaxRewriter where C: MacroExpansi
   }
 
   override func visit(_ node: ClosureExprSyntax) -> ExprSyntax {
-    // We do not (currently) attempt to descent into closures.
+    // We do not (currently) attempt to descend into closures.
     ExprSyntax(node)
   }
 
   override func visit(_ node: MacroExpansionExprSyntax) -> ExprSyntax {
-    // We do not attempt to descent into freestanding macros.
+    // We do not attempt to descend into freestanding macros.
     ExprSyntax(node)
   }
 
   override func visit(_ node: FunctionDeclSyntax) -> DeclSyntax {
-    // We do not (currently) attempt to descent into functions.
+    // We do not (currently) attempt to descend into functions.
     DeclSyntax(node)
   }