Non existing links on Adopting Multi Root Workspace APIs page

[ViniciusALS]

On the Adopting Multi Root Workspace APIs page there are multiple links that no longer exist.

• On line 224: https://github.com/Microsoft/language-server-protocol/blob/master/protocol.md#initialize
• On line 224: https://github.com/Microsoft/vscode-languageserver-node/blob/master/protocol/src/protocol.workspaceFolders.ts
• On line 238: https://github.com/Microsoft/vscode-languageserver-node/blob/master/protocol/src/protocol.configuration.ts