[7.x] Fix typos in comments (#33413)

Author: LeoNguyenHQ

src/Illuminate/Cache/DatabaseStore.php

@@ -44,7 +44,7 @@ class DatabaseStore implements Store
     protected $lockTable;
 
     /**
-     * A array representation of the lock lottery odds.
+     * An array representation of the lock lottery odds.
      *
      * @var array
      */

src/Illuminate/Database/Schema/Grammars/SQLiteGrammar.php

@@ -464,7 +464,7 @@ protected function typeLongText(Fluent $column)
     }
 
     /**
-     * Create the column definition for a integer type.
+     * Create the column definition for an integer type.
      *
      * @param  \Illuminate\Support\Fluent  $column
      * @return string

src/Illuminate/Foundation/Testing/Concerns/MakesHttpRequests.php

@@ -399,7 +399,7 @@ public function deleteJson($uri, array $data = [], array $headers = [])
     }
 
     /**
-     * Visit the given URI with a OPTIONS request.
+     * Visit the given URI with an OPTIONS request.
      *
      * @param  string  $uri
      * @param  array  $data
@@ -415,7 +415,7 @@ public function options($uri, array $data = [], array $headers = [])
     }
 
     /**
-     * Visit the given URI with a OPTIONS request, expecting a JSON response.
+     * Visit the given URI with an OPTIONS request, expecting a JSON response.
      *
      * @param  string  $uri
      * @param  array  $data

src/Illuminate/Support/Testing/Fakes/EventFake.php

@@ -71,7 +71,7 @@ public function assertDispatched($event, $callback = null)
     }
 
     /**
-     * Assert if a event was dispatched a number of times.
+     * Assert if an event was dispatched a number of times.
      *
      * @param  string  $event
      * @param  int  $times

src/Illuminate/Validation/Rule.php

@@ -27,7 +27,7 @@ public static function dimensions(array $constraints = [])
     }
 
     /**
-     * Get a exists constraint builder instance.
+     * Get an exists constraint builder instance.
      *
      * @param  string  $table
      * @param  string  $column