Update README.md

Author: zeropk

DIY_Fixture/Fixture_1706_1/README.md

@@ -11,10 +11,8 @@
 * M3 nut: 6
 
 ## 3D Printouts
-![ScreenShot](../../images/oCam_Fixture_1706_1_Up.jpg)
-![ScreenShot](../../images/oCam_Fixture_1706_1_Down.jpg)
-![ScreenShot](../../images/oCam_Fixture_1706_1_Flat_1.jpg)
-![ScreenShot](../../images/oCam_Fixture_1706_1_Flat_Back.jpg)
+![ScreenShot](../../images/oCam_Fixture_1706_1_Straight.png)
+![ScreenShot](../../images/oCam_Fixture_1706_1_UpDown.png)
 
 ## 3D Viewer
 * https://skfb.ly/68YRC