Fix lint warnings

Add `text` to blank markdown code blocks.

Author: jabley

docs/mwl/README.md

@@ -16,7 +16,7 @@ The MWL server is a lightweight, production-ready DICOM worklist solution that:
 
 ### Components
 
-```
+```text
 ┌─────────────────────────────────────────────────────────────┐
 │                    MWL Server (Port 4243)                   │
 ├─────────────────────────────────────────────────────────────┤

docs/pacs/README.md

@@ -15,7 +15,7 @@ The PACS server is a lightweight, production-ready DICOM storage solution that:
 
 ### Components
 
-```
+```text
 ┌─────────────────────────────────────────────────────────────────────┐
 │                       PACS Server (Port 4244)                       │
 ├─────────────────────────────────────────────────────────────────────┤
@@ -60,7 +60,7 @@ Modalities send images in JPEG Lossless transfer syntax. The gateway PACS does n
 
 **Hash-based Directory Layout:**
 
-```
+```text
 storage/
 ├── b2/
 │   └── 51/

docs/relay-listener/README.md

@@ -3,10 +3,9 @@
 Relay listener uses websocket communication to Manage Breast Screening service via Azure Relay.
 The listener processes worklist actions sent from Manage/Django and creates worklist items in the Modality Worklist server.
 
-
 ## Architecture
 
-```
+```text
 ┌─────────────────────┐                           ┌──────────────────────┐
 │   Django (Manage)   │                           │  Gateway (Behind FW) │
 └─────────────────────┘                           └──────────────────────┘
@@ -27,7 +26,6 @@ The listener processes worklist actions sent from Manage/Django and creates work
          │                                                          │
 ```
 
-
 ## Firewall Compatibility
 
 Connection works through firewalls because:
@@ -76,12 +74,10 @@ AZURE_RELAY_SHARED_ACCESS_KEY=your_actual_key_here
 
 ### 3. Start the Gateway Services
 
-
 ```bash
 docker compose up --build
 ```
 
-
 ## Message Flows
 
 ### Worklist Creation (Django → Gateway)
@@ -93,7 +89,6 @@ docker compose up --build
 5. Gateway creates worklist item in Modality Worklist server storage via `CreateWorklistItem` service class.
 6. Gateway sends success/failure response back.
 
-
 ## Testing
 
 1. Start both gateway and Manage/Django services

docs/upload/README.md

@@ -13,7 +13,7 @@ The upload service:
 
 ## Architecture
 
-```
+```text
 ┌─────────────────────────────────────────────────────────────┐
 │                    Upload Service                           │
 ├─────────────────────────────────────────────────────────────┤