Update ROADMAP.md (hashicorp#442)

* Update ROADMAP.md

Update roadmap to reflect the latest plans/in-progress initiatives

* Update ROADMAP.md

* Update ROADMAP.md

* Update ROADMAP.md

Co-authored-by: Radek Simko <radek.simko@gmail.com>

ROADMAP.md

@@ -7,18 +7,17 @@ Each release will include necessary tasks that lead to the completion of the sta
 ### Expanded Completion and Hover
 The `terraform-ls` language server supports basic schema-driven completion. We plan to introduce additional completion and hover capabilities:
 
-- Modules
-- Provide nested navigation symbols (i.e. nested blocks and block attributes)
+- Provide nested navigation symbols (i.e. nested blocks and block attributes) [#420](https://github.com/hashicorp/terraform-ls/pull/420) :white_check_mark:
 
-### Syntax highlighting improvements via semantic tokens [#331](https://github.com/hashicorp/terraform-ls/pull/331)
+### Syntax highlighting improvements via semantic tokens [#331](https://github.com/hashicorp/terraform-ls/pull/331) :white_check_mark:
 
-### Provide completion and hover for expressions (i.e. references such as `aws_instance.public_ip`) [#2](https://github.com/hashicorp/hcl-lang/issues/2)
+### Provide completion and hover for expressions (i.e. references such as `aws_instance.public_ip`) [#38](https://github.com/hashicorp/terraform-ls/issues/38)
 
 ### Improved detection of uninitialized modules
 
 ## Researching
 - Improve HCL identification and interpretation within LSP
-- Investigate integration of other diagnostic helpers, such as [tflint](https://github.com/terraform-linters/tflint)
+- Source provider schemas more flexibly [#354](https://github.com/hashicorp/terraform-ls/issues/354)
 
 ## Disclosures
 The product-development initiatives in this document reflect HashiCorp's current plans and are subject to change and/or cancellation at HashiCorp's sole discretion.