Update how-to-create-1000000-nfts-on-solana.md (#233)

* Update how-to-create-1000000-nfts-on-solana.md

add the missing mpl in npm install command

* Update how-to-create-1000000-nfts-on-solana.md

src/pages/bubblegum/guides/javascript/how-to-create-1000000-nfts-on-solana.md

@@ -37,11 +37,11 @@ npm i @metaplex-foundation/umi-bundle-defaults
 ```
 
 ```js
-npm i @metaplex-foundation/bubblegum
+npm i @metaplex-foundation/mpl-bubblegum
 ```
 
 ```js
-npm i @metaplex-foundation/token-metadata
+npm i @metaplex-foundation/mpl-token-metadata
 ```
 
 ```js