fix: added example

Author: web3rover

technical-reference/reference-technical-articles/capped-oracles.md

@@ -26,4 +26,13 @@ The following configuration needs to be defined when configuring the capped orac
 * Initial Snapshot Exchange Rate and Timestamp: Defines the initial reference exchange rate and the timestamp at which the exchange rate is taken from. 
 * Snapshot Gap: Used to define the inflation of the exchange rate at each snapshot. 
 
-Note that all the above variables values can be updated using the governance process after the deployment with the initial values. 
+Note that all the above variables values can be updated using the governance process after the deployment with the initial values. 
+
+## Example
+
+Let’s walk through an example to understand how the capped oracle functions. Suppose we want to retrieve the exchange rate between wstETH and stETH.
+
+- **Annual Growth Rate:** Assume an annual growth rate of 2.9%, based on Lido’s estimated APY. Internally, this will be converted into a per-second growth rate.
+- **Snapshot Interval:** The snapshot can be updated once per month to refresh the reference exchange rate.
+- **Initial Snapshot:** We fetch the current exchange rate and timestamp from the onchain wstETH vault. For instance, the current exchange rate is `1.200101369591475639` and the timestamp is `1744895950`.
+- **Snapshot Gap:** A gap can be added to slightly inflate the capped exchange rate—for example, by 5% over the snapshot value. Since snapshots are updated monthly, we can calculate the expected monthly growth from the annual rate and adjust accordingly. With a 2.9% annual growth rate and an initial exchange rate of 1.2, this might translate to an additional buffer of around `0.0001`.