Fix typo in README

Author: thiagodasilvamenezes

README.md

@@ -14,3 +14,70 @@ Output
 ```
 
 _© 2022 XYZ, Inc._
+
+# Introduction to Git and GitHub
+
+## Simple Interest Calculator
+
+A calculator that calculates simple interest given principal, annual rate of interest and time period in years.
+
+```
+Input:
+   p, principal amount
+   t, time period in years
+   r, annual rate of interest
+Output
+   simple interest = p*t*r
+```
+
+_© 2022 XYZ, Inc._
+# Introduction to Git and GitHub
+
+## Simple Interest Calculator
+
+A calculator that calculates simple interest given principal, annual rate of interest and time period in years.
+
+```
+Input:
+   p, principal amount
+   t, time period in years
+   r, annual rate of interest
+Output
+   simple interest = p*t*r
+```
+
+_© 2022 XYZ, Inc._
+
+# Introduction to Git and GitHub
+
+## Simple Interest Calculator
+
+A calculator that calculates simple interest given principal, annual rate of interest and time period in years.
+
+```
+Input:
+   p, principal amount
+   t, time period in years
+   r, annual rate of interest
+Output
+   simple interest = p*t*r
+```
+
+_© 2022 XYZ, Inc._
+
+# Introduction to Git and GitHub
+
+## Simple Interest Calculator
+
+A calculator that calculates simple interest given principal, annual rate of interest and time period in years.
+
+```
+Input:
+   p, principal amount
+   t, time period in years
+   r, annual rate of interest
+Output
+   simple interest = p*t*r
+```
+
+_© 2022 XYZ, Inc._