CC86524: Changing file name

Hello, @conceptdev,
This proposed file change comes from https://github.com/MicrosoftDocs/visualstudio-docs.ko-kr/pull/25 .
Could you review this contribution and help to merge if agreed?
Many thanks in advance.

Author: v-makoud

mac/installation.md

@@ -27,7 +27,7 @@ For working with iOS in Visual Studio you need the following pieces:
 
 1. Download Visual Studio for Mac from [https://visualstudio.microsoft.com/](https://visualstudio.microsoft.com/)
 
-2. Once the installer package is downloaded, click the **VisualStudioInstaller.dmg** file to mount the installer and then run it by double-clicking the logo, as illustrated by the following image:
+2. Once the installer package is downloaded, click the **VisualStudioForMacInstaller.dmg** file to mount the installer and then run it by double-clicking the logo, as illustrated by the following image:
 
    ![Installer dialog](media/installer-image1.png)
 
@@ -113,4 +113,4 @@ For other Workloads, refer to the [Workloads](workloads.md) page.
 
 ## See also
 
-- [Install Visual Studio 2017 (on Windows)](/visualstudio/install/install-visual-studio)
+- [Install Visual Studio 2017 (on Windows)](/visualstudio/install/install-visual-studio)