[EN Doc]: Nuxt.js into configuration-builddir.md (#624)

* Some typo fix

Signed-off-by: MachinisteWeb <[email protected]>

* Nuxt.js for file configuration-builddir.md

Signed-off-by: MachinisteWeb <[email protected]>

* Readd ```

Signed-off-by: MachinisteWeb <[email protected]>

Author: MachinisteWeb

en/api/configuration-builddir.md

@@ -1,14 +1,14 @@
 ---
 title: "API: The buildDir Property"
-description: Define the dist directory for your nuxt.js application
+description: Define the dist directory for your Nuxt.js application
 ---
 
 # The buildDir Property
 
 - Type: `String`
 - Default: `.nuxt`
 
-> Define the dist directory for your nuxt.js application
+> Define the dist directory for your Nuxt.js application
 
 Example (`nuxt.config.js`):