[clang-format][docs] Fix incorrect 'clang-format 4' option markers

[kuzkry]

Summary

Introduced by 23a5090c6, some style option markers indicated
'clang-format 4', though their respective options were available in
earlier releases.

[kuzkry]

Hi! Here's a list of earliest commits where each option changed in this PR was introduced:

ReflowComments - a0a5039d2e520fd42646cb305ed8b696acb41e63
SortIncludes - da446770823be1b1d1562734e55da7c1a5f2579c

clang/docs/ClangFormatStyleOptions.rst

* ``RAS_Middle`` (in configuration: ``Middle``)
     Align reference in the middle.
 
     .. code-block:: c++
 
       int & a;
 
 
 
-**ReflowComments** (``Boolean``) :versionbadge:`clang-format 4`
+**ReflowComments** (``Boolean``) :versionbadge:`clang-format 3.8`
   If ``true``, clang-format will attempt to re-flow comments.
 
   .. code-block:: c++
 
      false:
      // veryVeryVeryVeryVeryVeryVeryVeryVeryVeryVeryLongComment with plenty of information
      /* second veryVeryVeryVeryVeryVeryVeryVeryVeryVeryVeryLongComment with plenty of information */
 
.. code-block:: c++
      }                                  } // namespace a
 
      ShortNamespaceLines: 1     vs.     ShortNamespaceLines: 0
      namespace b {                      namespace b {
        int foo;                           int foo;
        int bar;                           int bar;
      } // namespace b                   } // namespace b
 
-**SortIncludes** (``SortIncludesOptions``) :versionbadge:`clang-format 4`
+**SortIncludes** (``SortIncludesOptions``) :versionbadge:`clang-format 3.8`
   Controls if and how clang-format will sort ``#includes``.
   If ``Never``, includes are never sorted.
   If ``CaseInsensitive``, includes are sorted in an ASCIIbetical or case
   insensitive fashion.
   If ``CaseSensitive``, includes are sorted in an alphabetical or case
   sensitive fashion.
 
   Possible values:

clang/include/clang/Format/Format.h

///    NS_TABLE_.*_END$"
   ///    /* second veryVeryVeryVeryVeryVeryVeryVeryVeryVeryVeryLongComment with plenty of information */
   ///
   ///    true:
   ///    // veryVeryVeryVeryVeryVeryVeryVeryVeryVeryVeryLongComment with plenty of
   ///    // information
   ///    /* second veryVeryVeryVeryVeryVeryVeryVeryVeryVeryVeryLongComment with plenty of
   ///     * information */
   /// \endcode
-  /// \version 4
+  /// \version 3.8
   bool ReflowComments;
   // clang-format on
 
   /// Remove optional braces of control statements (``if``, ``else``, ``for``,
   /// and ``while``) in C++ according to the LLVM coding style.
   /// \warning
   ///  This option will be renamed and expanded to support other styles.
   /// \endwarning
///    NS_TABLE_.*_END$"
   };
 
   /// Controls if and how clang-format will sort ``#includes``.
   /// If ``Never``, includes are never sorted.
   /// If ``CaseInsensitive``, includes are sorted in an ASCIIbetical or case
   /// insensitive fashion.
   /// If ``CaseSensitive``, includes are sorted in an alphabetical or case
   /// sensitive fashion.
-  /// \version 4
+  /// \version 3.8
   SortIncludesOptions SortIncludes;
 
   /// Position for Java Static imports.
   enum SortJavaStaticImportOptions : int8_t {
     /// Static imports are placed before non-static imports.
     /// \code{.java}
     ///   import static org.example.function1;
     ///