Update docs/data/migration/migration-pickers-v7/migration-pickers-v7.md

Co-authored-by: Lukas Tyla <llukas.tyla@gmail.com>
Signed-off-by: Flavien DELANGLE <flaviendelangle@gmail.com>

docs/data/migration/migration-pickers-v7/migration-pickers-v7.md

@@ -326,7 +326,7 @@ The following variables were renamed to have a coherent `Picker` / `Pickers` pre
   + import { usePickerContext } from '@mui/x-date-pickers';
   + import { usePickerContext } from '@mui/x-date-pickers-pro';
 
-  - const pickersContext = usePickerContext();
+  - const pickersContext = usePickersContext();
   + const pickerContext = usePickerContext();
   ```