chore: regenerate openapi-specs.json

Signed-off-by: Mohamed Belhsan Hmida <mohamedbelhsanhmida@gmail.com>

Author: BelhsanHmida

flexmeasures/ui/static/openapi-specs.json

@@ -4174,15 +4174,15 @@
               "string",
               "null"
             ],
-            "description": "Maximum forecast horizon. Defaults to retrain_frequency if set and 'PT48H' otherwise.",
+            "description": "Maximum forecast horizon. Defaults to covering the whole prediction period (which itself defaults to 48 hours).",
             "example": "PT48H"
           },
           "forecast-frequency": {
             "type": [
               "string",
               "null"
             ],
-            "description": "How often to recompute forecasts. Defaults retrain-frequency.",
+            "description": "How often to recompute forecasts. Defaults to retrain frequency.",
             "example": "PT1H"
           },
           "sensor-to-save": {