Update README.md

Author: kernaltrap8

README.md

@@ -2,7 +2,7 @@
 fetch program written in pure C
 # bulding
 this program uses the meson build system. you must have it installed to build `tinyfetch`.<br>
-run `meson setup build`, then `meson compile build`
+run `meson setup build`, then `meson compile -C build`
 # optional dependencies
 an optional dependency can be linked into tinyfetch which is used for GPU detection. on platforms without PCIe lanes, the preprocessor macro `PCI_DETECTION` in `tinyfetch.c` can be disabled to exclude this code.<br>
 to disable linking in `meson.build`, remove the `-lpci` flag from `link_args`.