docs: clarify Unreal uproject-dir path

Author: rain

docs/docs/00100-intro/00300-tutorials/00400-unreal-tutorial/00300-part-2.md

@@ -655,7 +655,7 @@ spacetime generate --lang unrealcpp --uproject-dir .. --unreal-module-name black
 This will generate a set of files in the `blackholio/Source/blackholio/Private/ModuleBindings` and `blackholio/Source/blackholio/Public/ModuleBindings` directories which contain the code generated types and reducer functions that are defined in your module, but usable on the client.
 
 :::note
-`--uproject-dir` is straightforward as the path to the .uproject file. `--unreal-module-name` is the name of the Unreal module which in most projects is the name of the project, in this case `blackholio`.
+`--uproject-dir` is the path to the Unreal project directory that contains the `.uproject` file. `--unreal-module-name` is the name of the Unreal module, which in most projects is the name of the project, in this case `blackholio`.
 :::
 
 :::warning