Update README.md

Corrected two instances of the typo "colletion" to "collection" in the readme.

README.md

@@ -22,8 +22,8 @@ Resources and Technical Documentation:
 | ------- | ------------- |   ------------- |  
 | Florence-2-base[[HF]](https://huggingface.co/microsoft/Florence-2-base) | 0.23B  | Pretrained model with FLD-5B  
 | Florence-2-large[[HF]](https://huggingface.co/microsoft/Florence-2-large) | 0.77B  | Pretrained model with FLD-5B  
-| Florence-2-base-ft[[HF]](https://huggingface.co/microsoft/Florence-2-base-ft) | 0.23B  | Finetuned model on a colletion of downstream tasks
-| Florence-2-large-ft[[HF]](https://huggingface.co/microsoft/Florence-2-large-ft) | 0.77B  | Finetuned model on a colletion of downstream tasks
+| Florence-2-base-ft[[HF]](https://huggingface.co/microsoft/Florence-2-base-ft) | 0.23B  | Finetuned model on a collection of downstream tasks
+| Florence-2-large-ft[[HF]](https://huggingface.co/microsoft/Florence-2-large-ft) | 0.77B  | Finetuned model on a collection of downstream tasks
  
 ## How to Get Started with the Model