docs(readme): update docs repo link

moved to <https://github.com/TrueBlocks/trueblocks-core/tree/master/docs>

Signed-off-by: sam bacha <32783916+sambacha@users.noreply.github.com>

Author: sambacha

README.md

@@ -130,7 +130,7 @@ Our [official docker version](https://github.com/TrueBlocks/trueblocks-docker) i
 
 ## Documentation
 
-The TrueBlocks [documentation repo](https://github.com/TrueBlocks/trueblocks-docs) builds the TrueBlocks website. See our website for the [best available documentation](https://trueblocks.io/).
+The TrueBlocks [documentation repo](https://github.com/TrueBlocks/trueblocks-core/tree/master/docs) builds the TrueBlocks website. See our website for the [best available documentation](https://trueblocks.io/).
 
 ## Linting