Some menu sliders need 2 decimals when incrementing by 0.05

[unknownna]

The number on the slider is not necessarily representative of the true value of the variable if it only shows one decimal when incrementing by 0.05, potentially leading to some confusion.

I found these as I went through the menus:

• "Team Damage Scalar" in "Gameplay Options"
• "Prediction Leap Scale" in "Network Options"
• "Pickup Flash Intensity" in "Display Options"
• "Blood Flash Intensity" in "Display Options"
• "Brightness" in "Display Options" in GZDoom

I found some more decimal issues:

• "Weapon Bob Speed" in "Display Options" only needs 1 decimal instead of 2 as it increments by 0.1 rather than 0.05.
• "Midi Voices" in "Sound Options -> Advanced Options" might not need a decimal at all.

[Graf Zahl]

fixed, except for the last one. The precision is already at 0, so I don't know.