Fix rendering of audioop license in Doc/license.rst (GH-99752)

Also some cosmetic blank line additions for consistency with the
formatting of the rest of the file.
(cherry picked from commit b5b3904)

Co-authored-by: Zachary Ware <zach@python.org>

Doc/license.rst

@@ -985,9 +985,12 @@ https://www.w3.org/TR/xml-c14n2-testcases/ and is distributed under the
    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+
 Audioop
 -------
+
 The audioop module uses the code base in g771.c file of the SoX project::
+
     Programming the AdLib/Sound Blaster
     FM Music Chips
     Version 2.0 (24 Feb 1992)