Fix misleading URLs in the documentation (#573)

Due to an issue with the configuration, links in the documentation
currently point to yarl's repo instead of frozenslist's repo.
To fix that, yarl substrings must be replaced with frozenlist.

CHANGES/573.doc.rst

@@ -0,0 +1,2 @@
+Rendered issue, PR, and commit links now lead to
+``frozenslist``'s repo instead of ``yarl``'s repo.

CHANGES/573.packaging.rst

@@ -0,0 +1,2 @@
+A name of a temporary building directory now reflects
+that it's related to ``frozenslist``, not ``yarl``.

docs/spelling_wordlist.txt

@@ -324,4 +324,3 @@ WSMsgType
 wss
 www
 xxx
-yarl

packaging/pep517_backend/_backend.py

@@ -196,7 +196,7 @@ def _get_sanitized_long_description(self):
 
 @contextmanager
 def _in_temporary_directory(src_dir: Path) -> t.Iterator[None]:
-    with TemporaryDirectory(prefix='.tmp-yarl-pep517-') as tmp_dir:
+    with TemporaryDirectory(prefix='.tmp-frozenlist-pep517-') as tmp_dir:
         with chdir_cm(tmp_dir):
             tmp_src_dir = Path(tmp_dir) / 'src'
             copytree(src_dir, tmp_src_dir, symlinks=True)

packaging/pep517_backend/_transformers.py

@@ -47,23 +47,23 @@ def sanitize_rst_roles(rst_source_text: str) -> str:
     """
     issue_substitution_pattern = (
         r"`#\g<issue_number> "
-        r"<https://github.com/aio-libs/yarl/issues/\g<issue_number>>`__"
+        r"<https://github.com/aio-libs/frozenlist/issues/\g<issue_number>>`__"
     )
 
     pr_role_regex = r"""(?x)
         :pr:`(?P<pr_number>[^`]+)(?:\s+(.*))?`
     """
     pr_substitution_pattern = (
         r"`PR #\g<pr_number> "
-        r"<https://github.com/aio-libs/yarl/pull/\g<pr_number>>`__"
+        r"<https://github.com/aio-libs/frozenlist/pull/\g<pr_number>>`__"
     )
 
     commit_role_regex = r"""(?x)
         :commit:`(?P<commit_sha>[^`]+)(?:\s+(.*))?`
     """
     commit_substitution_pattern = (
         r"`\g<commit_sha> "
-        r"<https://github.com/aio-libs/yarl/commit/\g<commit_sha>>`__"
+        r"<https://github.com/aio-libs/frozenlist/commit/\g<commit_sha>>`__"
     )
 
     gh_role_regex = r"""(?x)