Update README.md

Update README for the SDK package

Alpaca.Markets/README.md

@@ -1,12 +1,11 @@
-[![Contributors](https://img.shields.io/github/all-contributors/alpacahq/alpaca-trade-api-csharp?logo=github)](https://github.com/alpacahq/alpaca-trade-api-csharp/blob/develop/CONTRIBUTORS.md)
+[![Contributors](https://img.shields.io/github/all-contributors/alpacahq/alpaca-trade-api-csharp?logo=github)](https://github.com/alpacahq/alpaca-trade-api-csharp/blob/main/CONTRIBUTORS.md)
 [![Codacy](https://img.shields.io/codacy/grade/7659cd4379964ef190a1088aa879350a?logo=codacy)](https://www.codacy.com/gh/OlegRa/Alpaca.Markets/dashboard?utm_source=github.com)
 [![Coverage](https://app.codacy.com/project/badge/Coverage/7659cd4379964ef190a1088aa879350a)](https://www.codacy.com/gh/OlegRa/Alpaca.Markets/dashboard?utm_source=github.com)
-[![PVS-Studio](https://img.shields.io/badge/PVS--Studio-0-blue?logo=opensourceinitiative&logoColor=white&logoWidth=16)](https://pvs-studio.com/pvs-studio/?utm_source=website&utm_medium=github&utm_campaign=open_source)
 [![Sponsors](https://img.shields.io/github/sponsors/OlegRa?logo=github)](https://github.com/sponsors/OlegRa)
 
 # .NET SDK for Alpaca Markets API
 
-This package contains C#/.NET SDK for [Alpaca Trade API](https://docs.alpaca.markets/). See full online documentation [here](https://olegra.github.io/Alpaca.Markets/api/Alpaca.Markets.html).
+This package contains C#/.NET SDK for [Alpaca Trade API](https://docs.alpaca.markets/). See complete online documentation [here](https://olegra.github.io/Alpaca.Markets/api/Alpaca.Markets.html).
 
 ## .NET Core Usage Example
 
@@ -43,13 +42,13 @@ namespace AlpacaExample
     }
 }
 ```
-4.  Replace `KEY_ID` and `SECRET_KEY` values with your own data from the Alpaca dashboard.
-5.  Run the sample application using `dotnet run` command and check the output. You should see information about the current market timestamp and the times that the market will open and close next.
+4.  Replace the `KEY_ID` and `SECRET_KEY` values with your data from the Alpaca dashboard.
+5.  Run the sample application using `dotnet run` command and check the output. You should see information about the current market timestamp and when the market will open and close next.
 
-See the [UsageExamples](https://github.com/alpacahq/alpaca-trade-api-csharp/tree/develop/UsageExamples) project for near-to-real-world strategy implementation using this SDK and the
+See the [UsageExamples](https://github.com/alpacahq/alpaca-trade-api-csharp/tree/main/UsageExamples) project for near-to-real-world strategy implementation using this SDK and the
 [Alpaca.Markets.Tests](https://github.com/OlegRa/Alpaca.Markets.Tests) repository for SDK usage examples. The [Wiki](https://github.com/alpacahq/alpaca-trade-api-csharp/wiki) pages contain
 a lot of additional information about different aspects of this SDK (environments handling, authentication types, different order placement approaches, streaming client subscriptions handling, etc.).
 
 ## Contributors
 
-Thanks a lot for all contributors. See the full list of project supporters in the [CONTRIBUTORS](https://github.com/alpacahq/alpaca-trade-api-csharp/blob/develop/CONTRIBUTORS.md) file.
+Thanks a lot for all the contributors. See the complete list of project supporters in the [CONTRIBUTORS](https://github.com/alpacahq/alpaca-trade-api-csharp/blob/main/CONTRIBUTORS.md) file.