Update CLI doc (#1063)

docs/modules/ROOT/pages/api-core.adoc

@@ -119,7 +119,7 @@ If any errors are found, the command will exit with a non-zero exit code and pri
 * `--contract <CONTRACT>`  The name or fully qualified name of the contract to validate. If not specified, all upgradeable contracts in the build info directory will be validated.
 * `--reference <REFERENCE_CONTRACT>`  Can only be used when the `--contract` option is also provided. The name or fully qualified name of the reference contract to use for storage layout comparisons. If not specified, uses the `@custom:oz-upgrades-from` annotation if it is defined in the contract that is being validated.
 * `--requireReference`  Can only be used when the `--contract` option is also provided. Not compatible with `--unsafeSkipStorageCheck`. If specified, requires either the `--reference` option to be provided or the contract to have a `@custom:oz-upgrades-from` annotation.
-* `--referenceBuildInfoDirs`  Optional paths of additional build info directories from previous versions of the project to use for storage layout comparisons. When using this option, refer to one of these directories using prefix `<dirName>:` before the contract name or fully qualified name in the `--reference` option or `@custom:oz-upgrades-from` annotation, where `<dirName>` is the directory short name. Each directory short name must be unique.
+* `--referenceBuildInfoDirs`  Optional paths of additional build info directories from previous versions of the project to use for storage layout comparisons. When using this option, refer to one of these directories using prefix `<dirName>:` before the contract name or fully qualified name in the `--reference` option or `@custom:oz-upgrades-from` annotation, where `<dirName>` is the directory short name. Each directory short name must be unique, including compared to the main build info directory.
 * `--unsafeAllow "<VALIDATION_ERRORS>"` - Selectively disable one or more validation errors. Comma-separated list with one or more of the following: `state-variable-assignment, state-variable-immutable, external-library-linking, struct-definition, enum-definition, constructor, delegatecall, selfdestruct, missing-public-upgradeto, internal-function-storage`
 * `--unsafeAllowRenames` - Configure storage layout check to allow variable renaming.
 * `--unsafeSkipStorageCheck` - Skips checking for storage layout compatibility errors. This is a dangerous option meant to be used as a last resort.