Fix typo in quickstart (#756)

Co-authored-by: Dan Miller <[email protected]>

Author: Adrastopoulos

docs/quickstart/quickstart.mdx

@@ -53,7 +53,7 @@ import StepNumber from '@site/src/components/StepNumber';
   <Step>
     ## <StepNumber/> Start Building
 
-    After the call, you'll receive all the configurations customized to your requirements in about a 2-3 days.
+    After the call, you'll receive all the configurations customized to your requirements in about 2-3 days.
 
     You'll use these configurations together with our documentation to get started with your first project.