Fix typo: Sring -> String

Author: changeworld

docs/snippets/cpp/VS_Snippets_Winforms/ComboBox/CPP/comboboxcomplex.cpp

@@ -73,7 +73,7 @@ public ref class Win32Form1: public System::Windows::Forms::Form
       this->label2->Location = System::Drawing::Point( 0, 40 );
       this->label2->Size = System::Drawing::Size( 48, 24 );
       this->label2->TabIndex = 7;
-      this->label2->Text = "Sring 1";
+      this->label2->Text = "String 1";
       this->label2->TextAlign = System::Drawing::ContentAlignment::MiddleRight;
       this->label3->Location = System::Drawing::Point( 0, 72 );
       this->label3->Size = System::Drawing::Size( 48, 23 );