Fix markdown linting in scripts folder: code block languages and bare URLs

Author: Joseph

scripts/LeadTime/README.md

@@ -60,7 +60,7 @@ python lead_time.py --config custom_config.yaml
 
 ### Lead Time Calculation
 Lead time is calculated as:
-```
+```text
 Lead Time = Deployment Time - Commit Time
 ```
 
@@ -80,7 +80,7 @@ Lead Time = Deployment Time - Commit Time
 
 ## Output Example
 
-```
+```text
 LEAD TIME FOR CHANGES REPORT
 ==================================================
 

scripts/MTTR/README.md

@@ -59,7 +59,7 @@ python mttr_calculator.py --config production_config.yaml
 ## Understanding MTTR
 
 ### Calculation
-```
+```text
 MTTR = (Incident Resolved Time - Incident Created Time) / Number of Incidents
 ```
 
@@ -81,7 +81,7 @@ MTTR = (Incident Resolved Time - Incident Created Time) / Number of Incidents
 ## API Configuration
 
 ### PagerDuty
-1. Generate API key: https://support.pagerduty.com/docs/api-access-keys
+1. Generate API key: [PagerDuty API Access Keys](https://support.pagerduty.com/docs/api-access-keys)
 2. Required permissions: Read access to incidents
 3. Set environment variable: `export PAGERDUTY_TOKEN=your_token`
 
@@ -109,7 +109,7 @@ MTTR = (Incident Resolved Time - Incident Created Time) / Number of Incidents
 
 ## Output Example
 
-```
+```text
 MEAN TIME TO RECOVERY (MTTR) REPORT
 ==================================================