Move "Generated Fieldnames" documentation section to the "Fields" section.

PiperOrigin-RevId: 840803477

Author: protobuf-github-bot

content/reference/cpp/cpp-generated.md

@@ -149,40 +149,6 @@ The class also defines the following static methods:
     default instance of a message can be used as a factory by calling its
     `New()` method.
 
-<a id="generated-filenames"><!-- old anchor name, retained to avoid broken links --></a>
-
-### Generated Fieldnames {#generated-fieldnames}
-
-[Reserved keywords](https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/compiler/cpp/helpers.cc#L4)
-are appended with an underscore in the generated output.
-
-For example, the following proto3 definition syntax:
-
-```proto
-message MyMessage {
-  string false = 1;
-  string myFalse = 2;
-}
-```
-
-generates the following partial output:
-
-```cpp
-  void clear_false_() ;
-  const std::string& false_() const;
-  void set_false_(Arg_&& arg, Args_... args);
-  std::string* mutable_false_();
-  PROTOBUF_NODISCARD std::string* release_false_();
-  void set_allocated_false_(std::string* ptr);
-
-  void clear_myfalse() ;
-  const std::string& myfalse() const;
-  void set_myfalse(Arg_&& arg, Args_... args);
-  std::string* mutable_myfalse();
-  PROTOBUF_NODISCARD std::string* release_myfalse();
-  void set_allocated_myfalse(std::string* ptr);
-```
-
 ### Nested Types {#nested-types}
 
 A message can be declared inside another message. For example:
@@ -235,6 +201,40 @@ any method inherited from `Message` or accessing the message through other ways
 Correspondingly, the value of the returned pointer is never guaranteed to be the
 same across two different invocations of the accessor.
 
+<a id="generated-filenames"><!-- old anchor name, retained to avoid broken links --></a>
+
+### Generated Fieldnames {#generated-fieldnames}
+
+[Reserved keywords](https://github.com/protocolbuffers/protobuf/blob/main/src/google/protobuf/compiler/cpp/helpers.cc#L4)
+are appended with an underscore in the generated output.
+
+For example, the following proto3 definition syntax:
+
+```proto
+message MyMessage {
+  string false = 1;
+  string myFalse = 2;
+}
+```
+
+generates the following partial output:
+
+```cpp
+  void clear_false_() ;
+  const std::string& false_() const;
+  void set_false_(Arg_&& arg, Args_... args);
+  std::string* mutable_false_();
+  PROTOBUF_NODISCARD std::string* release_false_();
+  void set_allocated_false_(std::string* ptr);
+
+  void clear_myfalse() ;
+  const std::string& myfalse() const;
+  void set_myfalse(Arg_&& arg, Args_... args);
+  std::string* mutable_myfalse();
+  PROTOBUF_NODISCARD std::string* release_myfalse();
+  void set_allocated_myfalse(std::string* ptr);
+```
+
 ### Explicit Presence Numeric Fields {#numeric}
 
 For field definitions for numeric fields with