[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

CONTRIBUTING.md

@@ -17,8 +17,8 @@ check if there is an existing issue already filed for the same, in the project's
 GitHub [issue tracker]. If not, please file a new issue.
 
 If you want to help out by fixing bugs, choose an open issue in the [issue
-tracker] to work on and claim it by posting a comment saying "I would like to
-work on this.". Feel free to ask any doubts in the issue thread.
+tracker] to work on and claim it by posting a comment saying "I would like to work
+on this.". Feel free to ask any doubts in the issue thread.
 
 While working on implementing the feature, please go ahead and file a pull
 request. Filing a pull request early allows for getting feedback as early as

pyproject.toml

@@ -1,7 +1,7 @@
 [build-system]
 build-backend = "flit_core.buildapi"
 requires = [
-    "flit_core<4,>=3.2",
+    "flit-core<4,>=3.2",
 ]
 
 [project]
@@ -24,8 +24,7 @@ dynamic = [
     "description",
     "version",
 ]
-[project.urls]
-"GitHub" = "https://github.com/pypa/installer"
+urls."GitHub" = "https://github.com/pypa/installer"
 
 [tool.mypy]
 files = "src,tools"