Docs: various minor fixes

... picked up along the way.

autoload.php

@@ -204,7 +204,7 @@ public static function determineLoadedClass($classesBeforeLoad, $classesAfterLoa
  }
 
  // Since PHP 7.4 get_declared_classes() does not guarantee any order, making
- // it impossible to use order to determine which is the parent an which is the child.
+ // it impossible to use order to determine which is the parent and which is the child.
  // Let's reduce the list of candidates by removing all the classes known to be "parents".
  // That way, at the end, only the "main" class just included will remain.
  $newClasses = array_reduce(

src/Tokenizers/PHP.php

@@ -737,7 +737,7 @@ protected function tokenize($string)
  }
 
  /*
- Close an open "inside constant declaration" marker when no keyword convertion was needed.
+ Close an open "inside constant declaration" marker when no keyword conversion was needed.
  */
 
  if ($insideConstDeclaration === true

src/Util/Common.php

@@ -420,7 +420,7 @@ public static function isCamelCaps(
  */
  public static function isUnderscoreName($string)
  {
- // If there are space in the name, it can't be valid.
+ // If there is whitespace in the name, it can't be valid.
  if (strpos($string, ' ') !== false) {
  return false;
  }