fix: remove backtick escapes in GitHub Actions workflow body text

The YAML syntax error was caused by escaped backticks in the PR body text.
Removed the backslash escapes to fix the workflow validation.

Author: zerob13

.github/workflows/fetch-models.yml

@@ -140,8 +140,8 @@ jobs:
 - Generated standardized JSON format files
 
 ### 🔍 Files Updated
-- \`provider_configs/*.json\` - Individual provider configurations
-- \`provider_configs/all.json\` - Aggregated model data
+- provider_configs/*.json - Individual provider configurations
+- provider_configs/all.json - Aggregated model data
 
 ### ✅ Validation
 - [x] JSON syntax validation passed