[Fix] Fix quoted strings

mmpretrain/models/multimodal/blip2/blip2_caption.py

@@ -165,7 +165,7 @@ class Blip2Caption(BaseModel):
         attns_opt = torch.ones(
             inputs_opt.size()[:-1], dtype=torch.long).to(images.device)
 
-        self.tokenizer.padding_side = "right"
+        self.tokenizer.padding_side = 'right'
 
         prompt = [
             data_sample.gt_caption + '\n' for data_sample in data_samples
@@ -174,7 +174,7 @@ class Blip2Caption(BaseModel):
         opt_tokens = self.tokenizer(
             prompt,
             return_tensors='pt',
-            padding="longest",
+            padding='longest',
             truncation=True,
             max_length=self.max_txt_len,
         ).to(images.device)
@@ -248,7 +248,7 @@ class Blip2Caption(BaseModel):
         opt_tokens = self.tokenizer(
             prompt,
             return_tensors='pt',
-            padding="longest",
+            padding='longest',
             truncation=True,
             max_length=self.max_txt_len,
         ).to(images.device)