phpdoc typo fixes per processwire/processwire-issues#797

wire/core/Exceptions.php

@@ -40,7 +40,7 @@ class Wire404Exception extends WireException {
 	const codeNonexist = 404;
 	
 	/**
-	 * 404 is a result of a resource that might exist but there is there is no access
+	 * 404 is a result of a resource that might exist but there is no access
 	 * 
 	 * Similar to a WirePermissionException except always still a 404 externally
 	 * 

wire/core/Inputfield.php

@@ -1277,7 +1277,7 @@ abstract class Inputfield extends WireData implements Module {
 	/**
 	 * Process input for this Inputfield directly from the POST (or GET) variables 
 	 * 
-	 * This method should pull the value from the given `$input` ragument, sanitize/validate it, and 
+	 * This method should pull the value from the given `$input` argument, sanitize/validate it, and 
 	 * populate it to the `value` attribute of this Inputfield. 
 	 * 
 	 * Inputfield modules should implement this method if the built-in one here doesn't solve their need.

wire/core/PageimageVariations.php

@@ -54,7 +54,7 @@ class PageimageVariations extends Wire implements \IteratorAggregate, \Countable
 	 * 
 	 * This method is also here to implement the Countable interface. 
 	 * 
-	 * @param array $options See options for find() emthod
+	 * @param array $options See options for find() method
 	 * @return int
 	 * 
 	 */