swc-windows-installer.py: Fix 'swc_windows_installer.py' -> hyphens

Match our local script name in the instruction comment.

diff --git a/swc-windows-installer.py b/swc-windows-installer.py
index bfe9f034f54e9a9905a9d8d113e155088742fba5..098e1ecc19d33a70dce38f01590728c42ee62a37 100755 (executable)
--- a/swc-windows-installer.py
+++ b/swc-windows-installer.py
@@ -18,7 +18,7 @@ To use:
    http://continuum.io/anacondace.html
 2. Install msysGit
    https://github.com/msysgit/msysgit/releases
-3. Run swc_windows_installer.py
+3. Run swc-windows-installer.py.
    You should be able to simply double click the file in Windows
 
 """