Fixes gun misfires always happening (#3363)

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## About The Pull Request

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I fucked up, sorrrrryyy. I forgot to fix the chances

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Fixes good

## Changelog

:cl:
fix: Misfires no longer have 100% chance
/:cl:

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code/__DEFINES/guns.dm

@@ -70,9 +70,9 @@
 #define MANUFACTURER_IMPORT "Lanchester Import Co."
 
 // Misfire chances if the gun's safety is off
-#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_LOW 100
-#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_MEDIUM 100
-#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_HIGH 100
+#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_LOW 5
+#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_MEDIUM 10
+#define GUN_NO_SAFETY_MALFUNCTION_CHANCE_HIGH 15
 
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