Add string comparison operators to website
diff --git a/book/src/binding/str.md b/book/src/binding/str.md
index 93e9750..999727c 100644
--- a/book/src/binding/str.md
+++ b/book/src/binding/str.md
@@ -37,6 +37,13 @@
   const_iterator end() const noexcept;
   const_iterator cbegin() const noexcept;
   const_iterator cend() const noexcept;
+
+  bool operator==(const Str &) const noexcept;
+  bool operator!=(const Str &) const noexcept;
+  bool operator<(const Str &) const noexcept;
+  bool operator<=(const Str &) const noexcept;
+  bool operator>(const Str &) const noexcept;
+  bool operator>=(const Str &) const noexcept;
 };
 
 std::ostream &operator<<(std::ostream &, const Str &);
diff --git a/book/src/binding/string.md b/book/src/binding/string.md
index 47a2b96..c4a1b6a 100644
--- a/book/src/binding/string.md
+++ b/book/src/binding/string.md
@@ -42,6 +42,13 @@
   const_iterator end() const noexcept;
   const_iterator cbegin() const noexcept;
   const_iterator cend() const noexcept;
+
+  bool operator==(const String &) const noexcept;
+  bool operator!=(const String &) const noexcept;
+  bool operator<(const String &) const noexcept;
+  bool operator<=(const String &) const noexcept;
+  bool operator>(const String &) const noexcept;
+  bool operator>=(const String &) const noexcept;
 };
 
 std::ostream &operator<<(std::ostream &, const String &);