STY: Make dependencies naming consistent with recommended names

Make dependencies naming consistent with recommended names on the
corresponding `PyPI` sites or package websites: notably, use dashes
instead of underscores for compound names.

Author: jhlegarreta

pyproject.toml

@@ -29,9 +29,9 @@ dependencies = [
   "numpy>=1.21.3",
   "nest-asyncio>=1.5.1",
   "scikit-image>=0.15.0",
-  "scikit_learn>=1.3.0",
+  "scikit-learn>=1.3.0",
   "scipy>=1.8.0",
-  "typing_extensions >=4.12",
+  "typing-extensions >=4.12",
 ]
 dynamic = ["version"]
 
@@ -51,7 +51,7 @@ doc = [
   "pydotplus",
   "sphinx >= 4.5, <8",
   "sphinx-argparse",
-  "sphinx_rtd_theme",
+  "sphinx-rtd-theme",
   "sphinxcontrib-apidoc",
   "sphinxcontrib-napoleon",
   "sphinxcontrib-versioning",
@@ -87,7 +87,7 @@ notebooks = [
   "jupyter",
   "nbclient",
   "nbmake",
-  "mriqc_learn",
+  "mriqc-learn",
   "nipreps-synthstrip",
 ]
 antsopt = [