changed fistname into firstname in code example.

14_Day_Error_handling/14_day_error_handling.md

@@ -55,21 +55,21 @@ try {
 ```js
 try {
   let lastName = 'Yetayeh'
-  let fullName = fistName + ' ' + lastName
+  let fullName = firstName + ' ' + lastName
 } catch (err) {
   console.log(err)
 }
 ```
 
 ```sh
-ReferenceError: fistName is not defined
+ReferenceError: firstName is not defined
     at <anonymous>:4:20
 ```
 
 ```js
 try {
   let lastName = 'Yetayeh'
-  let fullName = fistName + ' ' + lastName
+  let fullName = firstName + ' ' + lastName
 } catch (err) {
   console.error(err) // we can use console.log() or console.error()
 } finally {
@@ -78,7 +78,7 @@ try {
 ```
 
 ```sh
-ReferenceError: fistName is not defined
+ReferenceError: firstName is not defined
     at <anonymous>:4:20
 In any case it  will be executed
 ```
@@ -88,7 +88,7 @@ The catch block take a parameter. It is common to pass e, err or error as a para
 ```js
 try {
   let lastName = 'Yetayeh'
-  let fullName = fistName + ' ' + lastName
+  let fullName = firstName + ' ' + lastName
 } catch (err) {
   console.log('Name of the error', err.name)
   console.log('Error message', err.message)
@@ -99,7 +99,7 @@ try {
 
 ```sh
 Name of the error ReferenceError
-Error message fistName is not defined
+Error message firstName is not defined
 In any case I will be executed
 ```