Keep prettier from reflowing markdown in .agents (#3035)

.prettierrc

@@ -22,6 +22,13 @@
 			"options": {
 				"parser": "astro"
 			}
+		},
+		{
+			"files": ".agents/**/*.md",
+			"options": {
+				"proseWrap": "preserve",
+				"embeddedLanguageFormatting": "off"
+			}
 		}
 	]
 }