Fix typos in README and tutorial_submission_policy.md (#3314)

Corrected 'Ceate' to 'Create' in README.
Removed duplicated phrase 'best practices' in tutorial_submission_policy.md.

Author: IvanBarbosaFilho

README.md

@@ -20,7 +20,7 @@ You can submit the following types of issues:
 
 We use sphinx-gallery's [notebook styled examples](https://sphinx-gallery.github.io/stable/tutorials/index.html) to create the tutorials. Syntax is very simple. In essence, you write a slightly well formatted Python file and it shows up as an HTML page. In addition, a Jupyter notebook is autogenerated and available to run in Google Colab.
 
-Here is how you can ceate a new tutorial (for a detailed description, see [CONTRIBUTING.md](./CONTRIBUTING.md)):
+Here is how you can create a new tutorial (for a detailed description, see [CONTRIBUTING.md](./CONTRIBUTING.md)):
 
 NOTE: Before submitting a new tutorial, read [PyTorch Tutorial Submission Policy](./tutorial_submission_policy.md).
 

tutorial_submission_policy.md

@@ -91,8 +91,7 @@ Please note the following:
 ## Deleting Stale Tutorials
 
 A tutorial might be considered stale when it no longer aligns with
-the latest PyTorch updates, features, or best practices or best
-practices:
+the latest PyTorch updates, features, or best practices:
 
 * The tutorial is no longer functional due to changes in PyTorch or
   its dependencies