Merge pull request SharePoint#5411 from PrasadKasireddy/PrasadKasireddy-patch-2

Update the type declarations

Author: andrewconnell

docs/spfx/web-parts/get-started/add-jqueryui-accordion-to-web-part.md

@@ -91,8 +91,8 @@ At this point, Yeoman installs the required dependencies and scaffolds the solut
 1. Open your console and install the needed types:
 
     ```shell
-    npm install @types/jquery@2
-    npm install @types/jqueryui
+    npm install @types/jquery@2 --save-dev
+    npm install @types/jqueryui --save-dev
     ```
 
 ### To unbundle external dependencies from web part bundle

docs/spfx/web-parts/guidance/reference-third-party-css-styles.md

@@ -140,7 +140,7 @@ The easiest way to reference a third-party library in SharePoint Framework proje
 2. Because you are building your web part in TypeScript, you also need TypeScript typings for jQuery that you can install by running the following command:
 
   ```sh
-  npm install @types/jquery --save
+  npm install @types/jquery --save-dev
   ```
 
 ### Reference libraries in the web part
@@ -217,7 +217,7 @@ When you reference third-party libraries from a URL, you don't need to install t
 Assuming you start with an empty project created as described previously in this article, install TypeScript typings for jQuery by running the following command:
 
 ```sh
-npm install @types/jquery --save
+npm install @types/jquery --save-dev
 ```
 
 ### Specify URLs of libraries