Fix: CI workflow syntax

Author: Skullians

Diff for: .github/workflows/build.yml

@@ -40,7 +40,7 @@ jobs:
 
       - name: Install CraftBukkit 1.20.1
         if: steps.cache-maven.outputs.cache-hit != 'true'
-        run: if [ ! -f "~/.m2/repository/org/bukkit/craftbukkit/1.20.1-R0.1-SNAPSHOT/craftbukkit-1.20.1-R0.1-SNAPSHOT-remapped-mojang.jar" ]; then cd ~/spigot-buildtools && java -jar BuildTools.jar --rev 1.20.1 --remapped --compile CRAFTBUKKIT; 
+        run: if [ ! -f "~/.m2/repository/org/bukkit/craftbukkit/1.20.1-R0.1-SNAPSHOT/craftbukkit-1.20.1-R0.1-SNAPSHOT-remapped-mojang.jar" ]; then cd ~/spigot-buildtools && java -jar BuildTools.jar --rev 1.20.1 --remapped --compile CRAFTBUKKIT; fi 
 
       - name: Install CraftBukkit 1.20.4
         if: steps.cache-maven.outputs.cache-hit != 'true'