Better docs for comp.db. setting

README.md

@@ -84,7 +84,7 @@ Since CodeChecker-related paths vary greatly between systems, the following sett
 | Name | Description |
 | --- | --- |
 | CodeChecker > Backend > Output folder <br> (default: `${workspaceFolder}/.codechecker`) | The output folder where the CodeChecker analysis files are stored. |
-| CodeChecker > Backend > Compilation database path <br> (default: *(empty)*) | Path to a custom compilation database, in case of a custom build system. The database setup dialog sets the path for the current workspace only. |
+| CodeChecker > Backend > Compilation database path <br> (default: *(empty)*) | Path to a custom compilation database, in case of a custom build system. The database setup dialog sets the path for the current workspace only. Leave blank to use the database in CodeChecker's output folder, or to use CodeChecker's autodetection for multi-root workspaces. |
 | CodeChecker > Editor > Show database dialog <br> (default: `on`) | Controls the dialog when opening a workspace without a compilation database. |
 | CodeChecker > Editor > Enable CodeLens <br> (default: `on`) | Enable CodeLens for displaying the reproduction path in the editor. |
 | CodeChecker > Executor > Enable notifications <br> (default: `on`) | Enable CodeChecker-related toast notifications. |

package.json

@@ -112,7 +112,7 @@
         },
         "codechecker.backend.compilationDatabasePath": {
           "type": "string",
-          "description": "Path to a custom compilation database, in case of a custom build system",
+          "description": "Path to a custom compilation database, in case of a custom build system. Leave blank to use the database in CodeChecker's output folder, or to use CodeChecker's autodetection for multi-root workspaces.",
           "default": null,
           "order": 3
         },