docs: update substreams Readme.md

Author: tvinagre

substreams/Readme.md

@@ -1,6 +1,6 @@
 # Substreams Indexing Integrations
 
-Please refer to the official [Substreams Indexing](https://app.gitbook.com/o/9wMvRDQIhk1xOsIZ0Zde/s/Yx9kvxtpT2xWdzvFiB3t/indexing/substreams-integration) docs.
+Please refer to the official [Substreams Indexing](https://docs.propellerheads.xyz/tycho/for-dexs/protocol-integration-sdk) docs.
 
 ## Release
 
@@ -12,13 +12,13 @@ and push the spkg into our registry.
 The CD pipeline will error if the Cargo version is not the same as the version in 
 the tag.
 
-Releases are immutable so do no try to delete tags or build the same release twice 
+Releases are immutable so do not try to delete tags or build the same release twice 
 since this will error.
 
-### Pre release
+### Pre-release
 
-To create a pre release for testing in dev you can start CD pipeline manually supplying 
-the package you'd like to pre release. This will create a 
+To create a pre-release for testing in dev you can start CD pipeline manually supplying 
+the package you'd like to pre-release. This will create a 
 `[package].pre-[commit-sha]` release in our spkg repository which you can use 
 to run the substream´.