Update Building.md
Use ^ line continuation in Windows shell command samples
@@ -25,7 +25,7 @@ cd build
# Configure your build of choice, for example:
# x86-64
-cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=./ \
+cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=.\ ^
-DISA_AVX2=ON -DISA_SSE41=ON -DISA_SSE2=ON ..
```
