[Sphinx] [Automation] Make sure Issue -> PR conversion of tables is correct

[felix91gr]

In the two CERT-C ports of guidelines relating to Shifts over integer types, the table conversion from the original Markdown to Sphinx / RST didn't work well.

The PRs have since been fixed by hand. Regardless, here are the two pairs of issues and PRs that I'm talking about:

• [Coding Guideline]: Subset Guideline for CERT C, INT34-C: Do not shift an expression by a negative number of bits or by greater than or equal to the number of bits that exist in the operand #156
  • ==> [auto-pr] #156: [Coding Guideline]: Subset Guideline for CERT C, INT34-C: Do not shift an expression by a negative number of bits or by greater than or equal to the number of bits that exist in the operand #180
• [Coding Guideline]: Defect Guideline for CERT C, INT34-C: Do not shift an expression by a negative number of bits or by greater than or equal to the number of bits that exist in the operand #174
  • ==> [auto-pr] #174: [Coding Guideline]: Defect Guideline for CERT C, INT34-C: Do not shift an expression by a negative number of bits or by greater than or equal to the number of bits that exist in the operand #181

And here's an illustration of how the table looked in the original text:

  | **Compilation Mode** | **`0 <= M < N`** | **`M < 0`**         |     **`N <= M`**    |
  |:--------------------:|:----------------:|:---------------------:|:-------------------:|
  | Debug                | Shifts normally  | Panics              | Panics              |
  | Release              | Shifts normally  | Shifts by `M mod N` | Shifts by `M mod N` |

CC @x0rw lemme know if there's something I can do to start improving the table conversion (maybe we can use another conversion library?)

[felix91gr]

PS: I should've grabbed a copy of what the automation generated, but after the manual fix, those commits have been lost to the ether (git commit --amend)