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

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

nemo/utils/export_utils.py

@@ -58,6 +58,7 @@ def forward(self, x):
             return F.linear(x, self.weight), self.bias
         return F.linear(x, self.weight, self.bias), None
 
+
 def get_export_format(filename: str):
     _, ext = os.path.splitext(filename)
     try: