Fix Mic_Electret according to KLC

fab.kicad_sym

@@ -5671,7 +5671,7 @@
       )
     )
   )
-  (symbol "Mic_Electret" (pin_names (offset 1.016)) (in_bom yes) (on_board yes)
+  (symbol "Mic_Electret" (in_bom yes) (on_board yes)
     (property "Reference" "MK" (id 0) (at 0 6.35 0)
       (effects (font (size 1.27 1.27)))
     )
@@ -5690,6 +5690,9 @@
     (property "ki_description" "Generic electret microphone" (id 5) (at 0 0 0)
       (effects (font (size 1.27 1.27)) hide)
     )
+    (property "ki_fp_filters" "*PinHeader*1x02*" (id 6) (at 0 0 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
     (symbol "Mic_Electret_0_1"
       (circle (center 0 0) (radius 0.0001)
         (stroke (width 0) (type default) (color 0 0 0 0))