docs: escape code literals in CHANGES with double backticks to fix Sphinx build

Author: Igoreduardobraga

CHANGES

@@ -18,7 +18,7 @@ Pint Changelog
 - Add absorbance unit and dimension. (#2114)
 - Add membrane filtration flux and permeability dimensionality, and shorthand "LMH". (#2116)
 - Fix find_shortest_path to use breadth first search (#2146)
-- Fix typo in `pyproject.toml`: rename `AS_MIP` to `HAS_MIP` so that MIP support is correctly detected. (#2152)
+- Fix typo in ``pyproject.toml``: rename ``AS_MIP`` to ``HAS_MIP`` so that MIP support is correctly detected. (#2152)
 
 
 0.24.4 (2024-11-07)