fixed broken links

Author: santiagodevrel

docs/docs/guides/events_subscriptions/custom_subscriptions.md

@@ -8,7 +8,7 @@ sidebar_label: 'Custom Subscriptions'
 You can extend the `Web3Subscription` class to create custom subscriptions. This way you can subscribe to custom events emitted by the provider.
 
 :::note
-This guide is most likely for advanced users who are connecting to a node that provides additional custom subscriptions. For normal users, the standard subscriptions are supported out of the box as you can find in [Supported Subscriptions](/guides/events_subscriptions/supported_subscriptions).
+This guide is most likely for advanced users who are connecting to a node that provides additional custom subscriptions. For normal users, the standard subscriptions are supported out of the box as you can find in [Supported Subscriptions](/guides/events_subscriptions/index.md).
 :::
 
 :::important

docs/docs/guides/events_subscriptions/index.md

@@ -36,7 +36,7 @@ unsubscribe(subscription);
 
 ## Subscribing to node events
 
-A standard Ethereum node like [Geth supports subscribing to specific events](https://geth.ethereum.org/docs/interacting-with-geth/rpc/pubsub#supported-subscriptions). Additionally, there are some Ethereum nodes that provide additional custom subscriptions. As you can find in [Supported Subscriptions](/guides/events_subscriptions/supported_subscriptions) guide, web3.js enables you to subscribe to the standard events out of the box. And it also provides you with the capability to subscribe to custom subscriptions as you can find in the [Custom Subscriptions](/guides/events_subscriptions/custom_subscriptions) guide.
+A standard Ethereum node like [Geth supports subscribing to specific events](https://geth.ethereum.org/docs/interacting-with-geth/rpc/pubsub#supported-subscriptions). Additionally, there are some Ethereum nodes that provide additional custom subscriptions. As you can find in this guide, web3.js enables you to subscribe to the standard events out of the box. And it also provides you with the capability to subscribe to custom subscriptions as you can find in the [Custom Subscriptions](/guides/events_subscriptions/custom_subscriptions) guide.
 
 :::important
 If you are the developer who provides custom subscriptions to users. We encourage you to develop a web3.js Plugin after you go through the [Custom Subscription](#custom-subscription) section below. You can find how to develop a plugin at [web3.js Plugin Developer Guide](/guides/web3_plugin_guide/plugin_authors)