Remove a doubled up "with"

PiperOrigin-RevId: 554934635
Change-Id: Ia666bc28ee8ee84c633f365312760996f0816ca7

absl/strings/cord.h

@@ -1619,7 +1619,7 @@ inline bool operator>=(const Cord& x, const Cord& y) {
 // Nonmember Cord-to-absl::string_view relational operators.
 //
 // Due to implicit conversions, these also enable comparisons of Cord with
-// with std::string and const char*.
+// std::string and const char*.
 inline bool operator==(const Cord& lhs, absl::string_view rhs) {
   size_t lhs_size = lhs.size();
   size_t rhs_size = rhs.size();