Fix typo for ValueError

which will cause error log like below:
NameError: name 'ValueErrorl' is not defined

Change-Id: I388886b7cf6d700e224c3847b7ba4ba4fe9c041d
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/323015
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: 彭杨益 <pyy101727@gmail.com>
diff --git a/git_config.py b/git_config.py
index 3cd0939..6f80ae0 100644
--- a/git_config.py
+++ b/git_config.py
@@ -352,7 +352,7 @@
       Trace(': parsing %s', self.file)
       with open(self._json) as fd:
         return json.load(fd)
-    except (IOError, ValueErrorl):
+    except (IOError, ValueError):
       platform_utils.remove(self._json, missing_ok=True)
       return None