Fix failure to ignore simulink autosave file

Ayase-252 · Ayase-252 · commit 1776050f705e · 2017-09-12T14:59:52.000+08:00
`.autosave` does not match the name of autosave file generated by
simulink. A leading asterisk(*) is needed to match such name.
diff --git a/Global/Matlab.gitignore b/Global/Matlab.gitignore
@@ -19,4 +19,4 @@ slprj/
 octave-workspace
 
 # Simulink autosave extension
-.autosave
+*.autosave
