Fix readme screenshot ssx.jpg filename

README.md

@@ -4,10 +4,10 @@ GDocsDesk is simple WebView wrapper for accessing Google Docs, Sheets and Slides
 This apps is only simple browser wrapper without any extended touch support, and only reccommended for tablet with keyboard and mouse/trackpad.
 
 ### Screenshot
-![Shortcuts](docs/s1.jpg)
-![Before Sign In](docs/s2.jpg)
-![Sign In Form](docs/s3.jpg)
-![Docs Home](docs/s4.jpg)
-![Docs Editor](docs/s5.jpg)
-![Sheets Editor](docs/s6.jpg)
-![Slides Editor](docs/s7.jpg)
+![Shortcuts](docs/ss1.jpg)
+![Before Sign In](docs/ss2.jpg)
+![Sign In Form](docs/ss3.jpg)
+![Docs Home](docs/ss4.jpg)
+![Docs Editor](docs/ss5.jpg)
+![Sheets Editor](docs/ss6.jpg)
+![Slides Editor](docs/ss7.jpg)