feat: add desc for veo 3.1 ratio, unpdate minimax chat schemas

Author: TAnd-dev

docs/api-references/text-models-llm/MiniMax/m1.json

@@ -57,6 +57,9 @@ Supported configurations include:
   },
   ratio: {
     desc: `The aspect ratio of the generated video.`,
+    veo_3_1: {
+      desc: `The aspect ratio of the generated video. The value 1:1 is only available when the resolution parameter is set to 720p.`,
+    },
   },
   seed: {
     desc: `Varying the seed integer is a way to get different results for the same other request parameters. Using the same value for an identical request will produce similar results. If unspecified, a random number is chosen.`,