better README (#2234)

Author: ChaseMillers

Server-Side Components/Background Scripts/ Bulk Change of Incident Priority Based on Category/README.md

@@ -1 +1,19 @@
-The code helps to automates the bulk update of incident priorities based on predefined category mappings. 
+# Bulk Change of Incident Priority Based on Category
+
+A background script that updates incident priorities for active incidents based on predefined category-to-priority mappings.
+
+## Usage
+
+1. Navigate to **System Definition → Scripts - Background**
+2. Copy and paste the script content
+3. Modify the `priorityMapping` object with your category-to-priority rules
+4. Click "Run script"
+
+## What It Does
+
+The script:
+1. Defines a mapping between incident categories and priority levels (e.g., 'Network': 1)
+2. Queries all active incidents
+3. Checks each incident's category against the mapping
+4. Updates the incident priority if a match is found
+5. Logs each updated incident number and new priority