Fix overview image
@@ -8,7 +8,7 @@ This is a proof of concept implementation of a BTC Parachain to bring Bitcoin in
It allows the creation of **PolkaBTC**, a fungible token that represents Bitcoin in the Polkadot ecosystem.
PolkaBTC is backed by Bitcoin 1:1 and allows redeeming of the equivalent amount of Bitcoins by relying on a collateralized third-party.
-![overview](https://gitlab.com/interlay/polkabtc-spec/-/blob/dev/polkabtc-spec/docs/source/figures/overview.png "BTC Parachain Overview")
+![overview](https://interlay.gitlab.io/polkabtc-spec/_images/overview.png "BTC Parachain Overview")
The project uses the concept of [Cryptocurrency-backed Assets](https://xclaim.io) to lock Bitcoin on the Bitcoin blockchain and issue BTC-backed tokens on the BTC Parachain.
The implementation is based on the [BTC Parachain specification](https://interlay.gitlab.io/polkabtc-spec/).
