Update README.md

Author: kritikaparmar-programmer

README.md

@@ -47,7 +47,7 @@ To make your local copy of the repository follow the steps:
 
 ##### For Flask:
 ```bash
-$ git clone -b dev https://github.com/<your-github-username>/HealthCheck
+$ git clone https://github.com/<your-github-username>/HealthCheck
 ```
 ##### For Flutter App Develpment:
 ```bash
@@ -69,7 +69,7 @@ git remote -v
 ```
 Keep your cloned repo upto date by pulling from upstream (this will also avoid any merge conflicts while committing new changes)
 ```bash
-git pull upstream master
+git pull upstream main
 ```
 
 #### Step 4: Setting up Project
@@ -176,4 +176,4 @@ You can find the Code of Conduct <a href="https://github.com/kritikaparmar-progr
 [![GSSOC](https://gssoc.girlscript.tech/images/favicon/favicon.png)](https://gssoc.girlscript.tech/)
 
 
-## Drop a ⭐ on the Github Repository if you like it.<br><br>
+## Drop a ⭐ on the Github Repository if you like it.<br><br>