Updated README.md for Linux

README.md

@@ -8,7 +8,7 @@ Select this deployment format if you want all languages and all weights in a sin
 
 [Super OTC Part 1](https://github.com/adobe-fonts/source-han-serif/raw/release/SuperOTC/SourceHanSerif.ttc.z01) (78,643,200 bytes) + [Super OTC Part 2](https://github.com/adobe-fonts/source-han-serif/raw/release/SuperOTC/SourceHanSerif.ttc.zip) (52,889,336 bytes)
 
-The ZIP file for the Super OTC has been necessarily split into two parts, due to GitHub's 100MB file size limit. Unfortunately, the built-in *Archive Utility* app of macOS does not support split ZIP files, and we therefore recommend that you download and install the [Unarchiver](http://unarchiver.c3.cx/unarchiver) app. To unzip, either drag the Part 2 file (the one with the ".zip" filename extension, and named *SourceHanSerif.ttc.zip*) onto the *Unarchiver* app, or use Control-Click to open it by specifying that app (after installing the *Unarchiver* app, you may also be able to simply double-click the Part 2 file). Either of these actions will combine the two parts and unzip them. For Windows, select the Part 2 file, then use the "Extract All" context menu to combine the two parts and unzip them.
+The ZIP file for the Super OTC has been necessarily split into two parts, due to GitHub's 100MB file size limit. Unfortunately, the built-in *Archive Utility* app of macOS does not support split ZIP files, and we therefore recommend that you download and install the [Unarchiver](http://unarchiver.c3.cx/unarchiver) app. To unzip, either drag the Part 2 file (the one with the ".zip" filename extension, and named *SourceHanSerif.ttc.zip*) onto the *Unarchiver* app, or use Control-Click to open it by specifying that app (after installing the *Unarchiver* app, you may also be able to simply double-click the Part 2 file). Either of these actions will combine the two parts and unzip them. For Windows, select the Part 2 file, then use the "Extract All" context menu to combine the two parts and unzip them. For Ubuntu and possibly other flavors of Linux, we recommend that you download and install the [Unarchiver command-line tools](https://unarchiver.c3.cx/commandline), then simply execute the *unar* command with the Part 2 file as its argument.
 
 **Special Note**: This deployment format requires macOS (OS X) Version 10.8 (aka *Mountain Lion*) or later, iOS 7 or later, Windows 10 Version 1703 (aka *Creators Update*) or later, a flavor of Linux that uses *fontconfig* and FreeType Version 2.5.0.1 or greater, or Adobe CS6 apps or later.