Update Dependabot options reference for clarity (#40522)

Co-authored-by: Sharra-writes <[email protected]>

Author: cluse-heartflow

content/code-security/dependabot/working-with-dependabot/dependabot-options-reference.md

@@ -782,7 +782,7 @@ When `versioning-strategy` is defined, {% data variables.product.prodname_depend
 |--------|--------|
 | `auto` | Default behavior.|
 | `increase`| Always increase the minimum version requirement to match the new version. If a range already exists, typically this only increases the lower bound. |
-| `increase-if-necessary` | Leave the constraint if the original constraint allows the new version, otherwise, bump the constraint. |
+| `increase-if-necessary` | Leave the version requirement unchanged if it already allows the new release (Dependabot still updates the resolved version). Otherwise widen the requirement. |
 | `lockfile-only` | Only create pull requests to update lockfiles. Ignore any new versions that would require package manifest changes. |
 | `widen`| Widen the allowed version requirements to include both the new and old versions, when possible. Typically, this only increases the maximum allowed version requirement. |