Update install_mingw.md

Author: TimGoTheCreator

docs/install_mingw.md

@@ -42,14 +42,13 @@ cd ..
 ```bash
 cd examples/TwoBodies
 python two_body.py
-../../next.exe two_body.txt 8 0.01 0.1 vtu
 ```
 
 #### If the copy command worked (copies to project root by default in CMake):
-../../next.exe two_body.txt 8 0.01 0.1 vtu
+../../next.exe two_body.txt 8 0.001 0.1 vtu
 
 #### If your executable is in build/
-../../build/next.exe two_body.txt 8 0.01 0.1 vtu
+../../build/next.exe two_body.txt 8 0.001 0.1 vtu
 
 5. **View results**