Fix formatting in float.rst documentation

Author: F18-Maverick

Doc/c-api/float.rst

@@ -216,7 +216,7 @@ Pack functions
 
 The pack routines write 2, 4 or 8 bytes, starting at *p*. *le* is an
 :c:expr:`int` argument, non-zero if you want the bytes string in little-endian
-format (exponent last, at ``p+1``, ``p+3``, or ``p+6``, ``p+7``), zero if you
+format (exponent last, at ``p+1``, ``p+3``, or ``p+6`` and ``p+7``), zero if you
 want big-endian format (exponent first, at *p*). The :c:macro:`PY_BIG_ENDIAN`
 constant can be used to use the native endian: it is equal to ``1`` on big
 endian processor, or ``0`` on little endian processor.