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

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

src/tox_ini_fmt/formatter/tox_section.py

@@ -63,15 +63,15 @@ def _handle_min_version(tox: SectionProxy) -> None:
             normalize=lambda groups: {k: requires(v) for k, v in groups.items()},
         )[0]
     ]
-    for _at, entry in enumerate(tox_requires):
+    for at, entry in enumerate(tox_requires):
         if entry.name == "tox":
             break
     else:
-        _at = -1
-    if _at == -1:
+        at = -1
+    if at == -1:
         tox_requires.append(Requirement(f"tox>={min_version}"))
     else:
-        specifiers = list(tox_requires[_at].specifier)
+        specifiers = list(tox_requires[at].specifier)
         if len(specifiers) == 0 or Version(specifiers[0].version) < Version(min_version):
-            tox_requires[_at] = Requirement(f"tox>={min_version}")
+            tox_requires[at] = Requirement(f"tox>={min_version}")
     tox["requires"] = "\n".join(str(i) for i in tox_requires)