Update docs

docs/resources/project_budget.md

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+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "env0_project_budget Resource - terraform-provider-env0"
+subcategory: ""
+description: |-
+  
+---
+
+# env0_project_budget (Resource)
+
+
+
+## Example Usage
+
+```terraform
+resource "env0_project" "project" {
+  name = "example"
+}
+
+resource "env0_project_budget" "project_budget" {
+  project_id = env0_project.project.id
+  amount     = 1000
+  timeframe  = "MONTHLY"
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `amount` (Number) amount of the project budget
+- `project_id` (String) id of the project
+- `timeframe` (String) budget timeframe (valid values: WEEKLY, MONTHLY, QUARTERLY, YEARLY)
+
+### Optional
+
+- `thresholds` (List of Number) list of notification thresholds
+
+### Read-Only
+
+- `id` (String) The ID of this resource.