[Fix] nvm install-latest-npm: node v4.5 and v4.6 work on npm v5.4.1, but not v5.4.2

Author: ljharb

nvm.sh

@@ -224,8 +224,8 @@ nvm_install_latest_npm() {
       nvm_echo '* `npm` `v5.3.x` is the last version that works on `node` 4.x versions below v4.4, or 5.x versions below v5.10, due to `Buffer.alloc`'
       $NVM_NPM_CMD install -g [email protected]
     elif [ $NVM_IS_4_4_OR_BELOW -eq 0 ] && nvm_version_greater 4.7.0 "${NODE_VERSION}"; then
-      nvm_echo '* `npm` `v5.4.x` is the last version that works on `node` `v4.5` and `v4.6`'
-      $NVM_NPM_CMD install -g [email protected]
+      nvm_echo '* `npm` `v5.4.1` is the last version that works on `node` `v4.5` and `v4.6`'
+      $NVM_NPM_CMD install -g [email protected].1
     elif [ $NVM_IS_6_OR_ABOVE -eq 0 ]; then
       nvm_echo '* `npm` `v5.x` is the last version that works on `node` below `v6.0.0`'
       $NVM_NPM_CMD install -g npm@5