docs: add zen3 filter to SHOW_ONLY_SERIES (#742)

README.md

@@ -118,7 +118,7 @@ environment variables are **optional**._
 | `NVIDIA_SESSION_TTL` | The time in milliseconds to keep the cart active while using `nvidia-api` | Default: `60000` |
 | `SHOW_ONLY_BRANDS` | Filter to show specified brands | Comma separated, e.g.: `evga,zotac` |
 | `SHOW_ONLY_MODELS` | Filter to show specified models | Both supported formats are comma separated <br/><br/>1. Standard  E.g.: `founders edition,rog strix` <br/><br/> 2. Advanced E.g: `MODEL:SERIES`, E.g: `founders edition:3090,rog strix` |
-| `SHOW_ONLY_SERIES` | Filter to show specified series | Comma separated, e.g.: `3080` |
+| `SHOW_ONLY_SERIES` | Filter to show specified series | Comma separated, e.g.: `3080,ryzen5900` |
 | `STORES` | [Supported stores](#supported-stores) you want to be scraped | Both supported formats are comma separated <br/><br/>1. Standard  E.g.: `"nvidia"` <br/><br/> 2. Advanced E.g: `STORE:PAGE_SLEEP_MIN:PAGE_SLEEP_MAX`, E.g: `nvidia:10000:30000` <br/><br/>Default: `nvidia` |
 
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