docs: update README.md (#244)

alows -> allows

Author: eltociear

README.md

@@ -92,7 +92,7 @@ Please refer to the [SwarmUI documentation](https://github.com/mcmonkeyprojects/
 
 [AI Horde](https://stablehorde.net/) is a crowdsourced distributed cluster of Image generation workers and text generation workers. 
 
-AI Horde requires to use API KEY, this mobile app alows to use either default API KEY (which is "0000000000"), or type your own. You can sign up and get your own AI Horde API KEY [here](https://stablehorde.net/register).
+AI Horde requires to use API KEY, this mobile app allows to use either default API KEY (which is "0000000000"), or type your own. You can sign up and get your own AI Horde API KEY [here](https://stablehorde.net/register).
 
 ### Option 4: Hugging Face Inference