Update images for Dev Guide (#585)

Author: Gunit2481

docs/use/dapp-staking/for-devs/create-promotion.md

@@ -10,7 +10,7 @@ If you have a campaign or new product you would like to share in the community,
 
 You can create a PR once a month, at most.
 
-<Figure src={require('/docs/use/dapp-staking/for-devs/img/Promotion_card_1.png').default} width="100%" />
+<Figure src={require('/docs/use/dapp-staking/for-devs/img/Promotion_card_3.png').default} width="80%" />
 
 # Steps for creating a PR for the promotion card
 

docs/use/dapp-staking/for-devs/img/Project.png

@@ -33,4 +33,6 @@ Claiming will release all your pending rewards;
 
 - **Edit Project Page:** Allows you to edit information about your dApp Staking projects;
 - **Edit your owner info:** If you want to change the registered smart contract address and the address receiving developer rewards ;
-- **Add a promotion card:** If you are running a campaign, you can create a promotion card that will be added to the dApp Staking section of the Portal after review;
+- **Add a promotion card:** If you are running a campaign, you can create a promotion card that will be added to the dApp Staking section of the Portal after review;
+
+<Figure src={require('/docs/use/dapp-staking/for-devs/img/dApp_owner_page_2.png').default} width="80%" />

docs/use/dapp-staking/for-devs/img/Promotion_card_3.png

@@ -61,6 +61,8 @@ Finally, click on **Register** and sign the transaction on the network;
 
 Congratulations! 🎉 Your project is now listed in dApp Staking and you can start your campaign and communication to attract stakers.
 
+<Figure src={require('/docs/use/dapp-staking/for-devs/img/dApp_page_2.png').default} width="80%" />
+
 :::tip
 
 When your dApp is deployed, we would appreciate it if you shared this with your community. We have created a template that you can use to write the article. You can find it [here](https://astarnetwork.notion.site/dApp-staking-template-Astar-Network-07d029f2d89644f48a17650522968682).