fix(hermes-docs)-fix Readme file (#2651)

Author: aditya520

apps/hermes/client/js/README.md

@@ -9,13 +9,13 @@ This library is a client for interacting with Hermes, allowing your application
 ### npm
 
 ```
-$ npm install --save @pythnetwork/hermes-client
+npm install --save @pythnetwork/hermes-client
 ```
 
 ### Yarn
 
 ```
-$ yarn add @pythnetwork/hermes-client
+yarn add @pythnetwork/hermes-client
 ```
 
 ## Quickstart