Update upgrading/v3.0-to-v3.1.md

Co-authored-by: Ralf Handl <[email protected]>

Author: lornajane

upgrading/v3.0-to-v3.1.md

@@ -198,7 +198,7 @@ This explicit declaration eliminates the need for tools to infer schema versions
 
 - [ ] Update `openapi` version to `3.1.1`
 - [ ] Replace `nullable: true` with type arrays (`type: ["string", "null"]`)
-- [ ] Update `exclusiveMinimum`/`exclusiveMaximum` from boolean modifiers to direct values and remove sibling `minimum/maximum`
+- [ ] Update `exclusiveMinimum`/`exclusiveMaximum` from boolean modifiers to direct values and remove sibling `minimum`/`maximum`
 - [ ] Change schema `example` to `examples` (as an array)
 - [ ] Update file upload descriptions to use `contentEncoding`/`contentMediaType`
 - [ ] Consider adding `$schema` declarations for better tool compatibility