DOC: Fix misplaced column separation character in table

Fix misplaced column separation character in table: change a misplaced
`+` character to `-` in a blog entry table.

docs/source/posts/2023/2023-01-29-final-report-shivam.rst

@@ -277,7 +277,7 @@ Timeline
 | Week 6 (25-07-2022)  | Extracting the animation data                             | `FURY <https://fury.gl/latest/posts/2022/2022-07-25-week-6-shivam.html>`__ - `Python <https://blogs.python-gsoc.org/en/xtanions-blog/week-6-extracting-the-animation-data/>`__                            |
 +----------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | Week 7 (01-08-2022)  | Fixing bugs in animations                                 | `FURY <https://fury.gl/latest/posts/2022/2022-08-01-week-7-shivam.html>`__ - `Python <https://blogs.python-gsoc.org/en/xtanions-blog/week-7-fixing-bugs-in-animations/>`__                                |
-+----------------------+-----------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
++----------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | Week 8 (09-08-2022)  | Fixing animation bugs                                     |  `FURY <https://fury.gl/latest/posts/2022/2022-08-09-week-08-shivam.html>`__ - `Python <https://blogs.python-gsoc.org/en/xtanions-blog/week-8-fixing-animation-bugs/>`__                                  |
 +----------------------+-----------------------------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | Week 9 (17-08-2022)  | First working skeletal animation prototype                | `FURY <https://fury.gl/latest/posts/2022/2022-08-17-week-09-shivam.html>`__ - `Python <https://blogs.python-gsoc.org/en/xtanions-blog/week-9-first-working-skeletal-animation-prototype/>`__              |