docs(key-terms): Typo in First Sentence (#12044)

The word "bellow" should be "below".

Author: stefan-ptrvch

docs/concepts/key-terms/key-terms.mdx

@@ -4,7 +4,7 @@ sidebar_order: 05
 description: "A few key terms and features to help you get a better understanding of Sentry."
 ---
 
-Some of the bellow terms have corresponding features with the same name (in upper case) in the [Key Features](#key-features) section.
+Some of the below terms have corresponding features with the same name (in upper case) in the [Key Features](#key-features) section.
 
 ## Key Terms