Fixed #66

Signed-off-by: Serhii Horodilov <sgorodil@gmail.com>

Author: shorodilov

src/intro/index.txt

@@ -84,21 +84,24 @@ meaning by the compiler or interpreter because they designate specific built-in
 functionality of the language.
 There are only 35 :cite:`docs-python:keywords` in Python and they are:
 
-+--------+----------+---------+----------+--------+
-| False  | await    | else    | import   | pass   |
-+--------+----------+---------+----------+--------+
-| None   | break    | except  | in       | raise  |
-+--------+----------+---------+----------+--------+
-| True   | class    | finally | is       | return |
-+--------+----------+---------+----------+--------+
-| and    | continue | for     | lambda   | try    |
-+--------+----------+---------+----------+--------+
-| as     | def      | from    | nonlocal | while  |
-+--------+----------+---------+----------+--------+
-| assert | del      | global  | not      | with   |
-+--------+----------+---------+----------+--------+
-| async  | elif     | if      | or       | yield  |
-+--------+----------+---------+----------+--------+
+.. table:: Python Keywords
+    :align: center
+
+    +------------+--------------+-------------+--------------+------------+
+    | ``False``  | ``await``    | ``else``    | ``import``   | ``pass``   |
+    +------------+--------------+-------------+--------------+------------+
+    | ``None``   | ``break``    | ``except``  | ``in``       | ``raise``  |
+    +------------+--------------+-------------+--------------+------------+
+    | ``True``   | ``class``    | ``finally`` | ``is``       | ``return`` |
+    +------------+--------------+-------------+--------------+------------+
+    | ``and``    | ``continue`` | ``for``     | ``lambda``   | ``try``    |
+    +------------+--------------+-------------+--------------+------------+
+    | ``as``     | ``def``      | ``from``    | ``nonlocal`` | ``while``  |
+    +------------+--------------+-------------+--------------+------------+
+    | ``assert`` | ``del``      | ``global``  | ``not``      | ``with``   |
+    +------------+--------------+-------------+--------------+------------+
+    | ``async``  | ``elif``     | ``if``      | ``or``       | ``yield``  |
+    +------------+--------------+-------------+--------------+------------+
 
 .. rubric:: Python is general purpose