Add blackdoc to .pre-commit-config.yaml (#7)

Author: tkoyama010

.pre-commit-config.yaml

@@ -6,3 +6,8 @@ repos:
   rev: 23.3.0
   hooks:
   - id: black
+- repo: https://github.com/keewis/blackdoc
+  rev: v0.3.9
+  hooks:
+  - id: blackdoc
+    files: '\.py$'

pvgmsh/__init__.py

@@ -22,7 +22,8 @@ def delaunay_2d(poly_data, size=1e-2):
 
     Examples
     --------
-    This example is inspired by `Gmsh Python tutorial 1 <https://gitlab.onelab.info/gmsh/gmsh/blob/gmsh_4_10_5/tutorials/python/t1.py>`_.
+    This example is inspired by Gmsh Python tutorial 1.
+    See https://gmsh.info/doc/texinfo/gmsh.html#t1 .
 
     >>> import pvgmsh
     >>> import pyvista as pv