docs: Fix link anchor in build-containers.mdx

Remove fragment from thv run link as suggested by GitHub Copilot review

Author: JAORMX

docs/toolhive/guides-cli/build-containers.mdx

@@ -113,7 +113,7 @@ thv build --tag mcp-git:latest uvx://mcp-server-git@latest
 
 ## Protocol schemes
 
-The `thv build` command supports the same protocol schemes as [`thv run`](./run-mcp-servers.mdx#run-a-server-using-protocol-schemes):
+The `thv build` command supports the same protocol schemes as [`thv run`](./run-mcp-servers.mdx):
 
 ### Python (uvx)