Update docs

docs/data-sources/user.md

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+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "env0_user Data Source - terraform-provider-env0"
+subcategory: ""
+description: |-
+  
+---
+
+# env0_user (Data Source)
+
+
+
+## Example Usage
+
+```terraform
+data "env0_user" "user_by_email_example" {
+  email = "john.doe@email.com"
+}
+
+output "user_id" {
+  value = data.env0_user.user_by_email_exmple.id
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- **email** (String) the email of the user
+
+### Read-Only
+
+- **id** (String) id of the user
+
+