update release template, collapse screenshots section

.github/release_template.md

@@ -9,11 +9,14 @@ Download build-engine-randomizer.exe from the Assets section below. Run it, poin
 
 For info on where to get the games and how to run them, [check out our wiki here](https://github.com/Die4Ever/build-engine-randomizer/wiki).
 
+<details>
+<summary>Screenshots</summary>
 <img src="https://user-images.githubusercontent.com/30947252/178213934-88e4ef31-89b5-484e-839a-a50f5f88d00f.png" alt="Damn, I'm lookin' good!" width="700"/>
 
 "Damn, I'm lookin' good!"
 
 <img src="https://user-images.githubusercontent.com/30947252/181628805-30325ff1-79a2-4dd6-a2f5-b969d45e4f96.png" alt="GUI" width="500"/>
+</details>
 
 Randomizes enemies and items. For games that use CON files (Duke Nukem 3D and Ion Fury so far) it also randomizes values like maximum health and ammo values, and enemy strengths. Also supports randomizing the map order. Be warned that putting every setting to maximum will make the game nearly impossible. I suggest you start with the default settings. Also check out the Randomizer.html file that gets created in the output directory to see what's changed.