Grammatically update the readme docs (#48328)

Summary:
Small grammatical update to the readme docs.

![Capture-py1](https://user-images.githubusercontent.com/65657554/99846018-9b475280-2b9b-11eb-84ab-37e129e4f3e6.PNG)

![Capture-py2](https://user-images.githubusercontent.com/65657554/99846023-9da9ac80-2b9b-11eb-9b3b-0998f53ec2ce.PNG)

![Capture-py3](https://user-images.githubusercontent.com/65657554/99846034-a0a49d00-2b9b-11eb-807e-7200c0b6fef4.PNG)

Pull Request resolved: #48328

Reviewed By: linbinyu

Differential Revision: D25132876

Pulled By: mrshenli

fbshipit-source-id: f1214b3098bec6713ef53f226f8d0d33946a5ec1

README.md

@@ -47,10 +47,10 @@ At a granular level, PyTorch is a library that consists of the following compone
 
 Usually, PyTorch is used either as:
 
-- a replacement for NumPy to use the power of GPUs.
-- a deep learning research platform that provides maximum flexibility and speed.
+- A replacement for NumPy to use the power of GPUs.
+- A deep learning research platform that provides maximum flexibility and speed.
 
-Elaborating further:
+Elaborating Further:
 
 ### A GPU-Ready Tensor Library
 
@@ -349,7 +349,7 @@ If you get a katex error run ```npm install katex```.  If it persists, try
 ### Previous Versions
 
 Installation instructions and binaries for previous PyTorch versions may be found
-on [our website](https://pytorch.org/previous-versions).
+on [Our Website](https://pytorch.org/previous-versions).
 
 
 ## Getting Started
@@ -374,12 +374,12 @@ Three-pointers to get you started:
 * [PyTorch YouTube](https://www.youtube.com/channel/UCWXI5YeOsh03QvJ59PMaXFw)
 
 ## Communication
-* forums: discuss implementations, research, etc. https://discuss.pytorch.org
-* GitHub issues: bug reports, feature requests, install issues, RFCs, thoughts, etc.
+* Forums: Discuss implementations, research, etc. https://discuss.pytorch.org
+* GitHub Issues: Bug reports, feature requests, install issues, RFCs, thoughts, etc.
 * Slack: The [PyTorch Slack](https://pytorch.slack.com/) hosts a primary audience of moderate to experienced PyTorch users and developers for general chat, online discussions, collaboration, etc. If you are a beginner looking for help, the primary medium is [PyTorch Forums](https://discuss.pytorch.org). If you need a slack invite, please fill this form: https://goo.gl/forms/PP1AGvNHpSaJP8to1
-* newsletter: no-noise, a one-way email newsletter with important announcements about PyTorch. You can sign-up here: https://eepurl.com/cbG0rv
-* Facebook page: important announcements about PyTorch. https://www.facebook.com/pytorch
-* for brand guidelines, please visit our website at [pytorch.org](https://pytorch.org/)
+* Newsletter: No-noise, a one-way email newsletter with important announcements about PyTorch. You can sign-up here: https://eepurl.com/cbG0rv
+* Facebook Page: Important announcements about PyTorch. https://www.facebook.com/pytorch
+* For brand guidelines, please visit our website at [pytorch.org](https://pytorch.org/)
 
 ## Releases and Contributing
 
@@ -399,7 +399,7 @@ PyTorch is a community-driven project with several skillful engineers and resear
 PyTorch is currently maintained by [Adam Paszke](https://apaszke.github.io/), [Sam Gross](https://github.com/colesbury), [Soumith Chintala](http://soumith.ch) and [Gregory Chanan](https://github.com/gchanan) with major contributions coming from hundreds of talented individuals in various forms and means.
 A non-exhaustive but growing list needs to mention: Trevor Killeen, Sasank Chilamkurthy, Sergey Zagoruyko, Adam Lerer, Francisco Massa, Alykhan Tejani, Luca Antiga, Alban Desmaison, Andreas Koepf, James Bradbury, Zeming Lin, Yuandong Tian, Guillaume Lample, Marat Dukhan, Natalia Gimelshein, Christian Sarofeen, Martin Raison, Edward Yang, Zachary Devito.
 
-Note: this project is unrelated to [hughperkins/pytorch](https://github.com/hughperkins/pytorch) with the same name. Hugh is a valuable contributor to the Torch community and has helped with many things Torch and PyTorch.
+Note: This project is unrelated to [hughperkins/pytorch](https://github.com/hughperkins/pytorch) with the same name. Hugh is a valuable contributor to the Torch community and has helped with many things Torch and PyTorch.
 
 ## License