Update Debug Symbols Uploading docs for Unreal Engine SDK (#13045)

* Update Debug Symbols Uploading docs for Unreal Engine SDK

* Remove Sentry CLI configuration type selection

Author: tustanivsky

docs/platforms/unreal/configuration/debug-symbols/img/unreal-debug-symbols.png

@@ -11,19 +11,37 @@ For Android, debug symbols upload is handled by [Sentry Android Gradle Plugin](/
 
 </Alert>
 
-The automated debug symbols upload is disabled by default and requires configuration. To configure it, navigate to **Project Settings > Plugins > Sentry**, then enter the [Auth Token](https://sentry.io/orgredirect/organizations/:orgslug/settings/auth-tokens/), Organization Slug, and Project Name. Note, that the Unreal Engine SDK automatically creates a `sentry.properties` file at the root of your project directory to store the configuration. This configuration file should **never** be made publicly available.
+## Automatic Upload
+
+The automated debug symbols upload is disabled by default and requires configuration. To configure it, navigate to **Project Settings > Plugins > Sentry**, then enable "Upload debug symbols automatically".
+
+Alternatively, debug symbol upload can be enabled by setting the `SENTRY_UPLOAD_SYMBOLS_AUTOMATICALLY` environment variable to `True`. This can be especially helpful in CI/CD environments where manual configuration is impractical.
 
 <Alert>
 
-You must configure which build configurations, target types, and platforms Sentry will upload debug symbols for in the "Misc" section of the plugin settings.
+Sentry will upload debug symbols only for build configurations and target types that are enabled in the "Misc" section of the plugin settings.
 
 </Alert>
 
 ![The Unreal Engine debug symbols upload configuration](./img/unreal-debug-symbols.png)
 
-Alternatively, debug symbol upload can be enabled by setting the `SENTRY_UPLOAD_SYMBOLS_AUTOMATICALLY` environment variable to `True`. This can be especially helpful in CI/CD environments where manual configuration is impractical.
+The `sentry-cli` require you to specify the organization and project to work with as well as a token to authenticate with Sentry. The Unreal Engine SDK provides two ways to configure these settings - either by using a properties file (default) or environment variables.
+
+### Properties File
+
+To configure the `sentry-cli` using properties file enter the [Auth Token](https://sentry.io/orgredirect/organizations/:orgslug/settings/auth-tokens/), Organization Slug, and Project Name. Note, that the Unreal Engine SDK automatically creates a `sentry.properties` file at the root of your project directory to store the configuration. This configuration file should **never** be made publicly available.
+
+### Environment Variables
+
+The `sentry-cli` can be configured by setting the following environment variables which will be automatically picked up during the debug symbol upload if the properties file is not found:
+
+```bash
+export SENTRY_ORG=___ORG_SLUG___
+export SENTRY_PROJECT=___PROJECT_SLUG___
+export SENTRY_AUTH_TOKEN=___ORG_AUTH_TOKEN___
+```
 
-### Manual Upload Using sentry-cli
+## Manual Upload Using sentry-cli
 
 To upload debug symbols to Sentry manually, run `sentry-cli` through the command line. You can either use the provided executables from within the package, or follow the [sentry-cli documentation](/cli/installation/) to make it available globally. To upload debug symbols run the following command: