Fix typo in Python pyproject.toml

Author: cboulay

bindings/Python/pyproject.toml

@@ -22,7 +22,7 @@ include = ["cerelink*"]  # package names should match these glob patterns (["*"]
 cerelink = ["*.dll"]
 
 [tool.setuptools.dynamic]
-readme = {file = ["README.md"]}
+readme = {file = ["README.md"], content-type = "text/markdown"}
 
 [tool.setuptools_scm]
 # Get version from git tags, looking in the root of the repository (not bindings/Python)