Improvement of the dotnet-contributing files (dapr#1330)

Add link about Dapr bot to contribution documentation

Signed-off-by: Divya Perumal <[email protected]>

Author: Shubhdeep02

CONTRIBUTING.md

@@ -123,3 +123,13 @@ A non-exclusive list of code that must be places in `vendor/`:
 ## Code of Conduct
 
 This project has adopted the [Contributor Covenant Code of Conduct](https://github.com/dapr/community/blob/master/CODE-OF-CONDUCT.md)
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+## GitHub Dapr Bot Commands
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+Checkout the [daprbot documentation](https://docs.dapr.io/contributing/daprbot/) for Github commands you can run in this repo for common tasks. For example, you can comment `/assign` on an issue to assign it to yourself.
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daprdocs/content/en/dotnet-sdk-contributing/dotnet-contributing.md

@@ -21,3 +21,7 @@ The `daprdocs` directory contains the markdown files that are rendered into the
 
    - All rules in the [docs guide]({{< ref contributing-docs.md >}}) should be followed in addition to these.
    - All files and directories should be prefixed with `dotnet-` to ensure all file/directory names are globally unique across all Dapr documentation.
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+## GitHub Dapr Bot Commands
+
+Checkout the [daprbot documentation](https://docs.dapr.io/contributing/daprbot/) for Github commands you can run in this repo for common tasks. For example, you can comment `/assign` on an issue to assign it to yourself.