minor #15104 [Intl] Fix typos (sebpacz)

This PR was merged into the 4.4 branch.

Discussion
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[Intl] Fix typos

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Commits
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74d2938 [Intl] Fix typos

Author: javiereguiluz

components/intl.rst

@@ -110,7 +110,7 @@ to catching the exception, you can also check if a given language code is valid:
 
     $isValidLanguage = Languages::exists($languageCode);
 
-Or if you have a alpha3 language code you want to check::
+Or if you have an alpha3 language code you want to check::
 
     $isValidLanguage = Languages::alpha3CodeExists($alpha3Code);
 
@@ -209,7 +209,7 @@ to catching the exception, you can also check if a given country code is valid::
 
     $isValidCountry = Countries::exists($alpha2Code);
 
-Or if you have a alpha3 country code you want to check::
+Or if you have an alpha3 country code you want to check::
 
     $isValidCountry = Countries::alpha3CodeExists($alpha3Code);