ext/standard Fix typos

Author: arshidkv12

ext/standard/tests/math/pi_basic.phpt

@@ -7,7 +7,7 @@ precision=14
 echo pi(), "\n";
 echo M_PI, "\n";
 // N.B pi() ignores all specified arguments no error
-// messages are produced if arguments are spcified.
+// messages are produced if arguments are specified.
 ?>
 --EXPECT--
 3.1415926535898