Update README.md

Author: paulmnguyen

README.md

@@ -1,5 +1,5 @@
 <p align="center" style="color: #343a40">
-  <h1 align="center">Depricated: Splunk App and Add-on</h1>
+  <h1 align="center">Deprecated: Splunk App and Add-on</h1>
 </p>
 
 ⚠️ **Important Notice**: This TA and App is now deprecated and will no longer receive updates or support. For continued support and future updates, please switch to the new app supported by Splunk.