try fix windows can't find denim bin

Signed-off-by: George Lemon <georgelemon@protonmail.com>

Author: georgelemon

.github/workflows/test.yaml

@@ -38,12 +38,11 @@ jobs:
         run: |
           mkdir bin
           nim c -d:release -o:bin/denim.exe src/denim.nim
-          copy src\denim.exe bin\denim.exe
 
       - name: Copy denim binary to bin/ (Unix)
         if: matrix.os == 'ubuntu-latest'
         run: |
-          nim c -d:release -o:src/denim src/denim.nim
           mkdir -p bin
-          cp src/denim bin/denim
+          nim c -d:release -o:bin/denim src/denim.nim
+
       - run: nimble test