Update nvm.sh

delete space

Author: Buguin

nvm.sh

@@ -2312,7 +2312,7 @@ nvm_download_artifact() {
   download_result=$(nvm_download -L -C - "${PROGRESS_BAR}" "${TARBALL_URL}" -o "${TARBALL}")
   if [ "${NVM_DEBUG-}" = 1 ]; then
     nvm_err "Download Http Status ${download_result}"
-  fi  
+  fi
   if [ "${download_result}" != '200' ]; then
     command rm -rf "${TARBALL}" "${tmpdir}"
     nvm_err "Binary download from ${TARBALL_URL} failed, trying source."