betwen --> between

Author: tdykstra

aspnetcore/performance/caching/hybrid.md

@@ -79,7 +79,7 @@ It's the caller's responsibility to ensure that a key scheme is valid and can't
 * `region` might be an enum or string from a predefined list of known regions.
 
 There is no significance placed on tokens such as `/` or `_`. The entire key value is treated as an opaque identifying string. In this case, you could omit the `/` and `_` with no
-change to the way the cache functions, but a delimiter is usually used to avoid ambiguity - for example `$"order{customerId}{orderId}"` could cause confusion betwen:
+change to the way the cache functions, but a delimiter is usually used to avoid ambiguity - for example `$"order{customerId}{orderId}"` could cause confusion between:
 
 - `customerId` 42 with `orderId` 123
 - `customerId` 421 with `orderId` 23