Merge pull request #3273 from Alkebsi/patch-2

Deleted some extra parentheses, part3c.md

Author: mluukkai

src/content/3/en/part3c.md

@@ -454,7 +454,7 @@ mongoose.connect(url)
   .then(result => {
     console.log('connected to MongoDB')
   })
-  .catch((error) => {
+  .catch(error => {
     console.log('error connecting to MongoDB:', error.message)
   })
 // highlight-end
@@ -498,7 +498,7 @@ mongoose.connect(url)
   .then(result => {
     console.log('connected to MongoDB')
   })
-  .catch((error) => {
+  .catch(error => {
     console.log('error connecting to MongoDB:', error.message)
   })
 ```