[gimp-help] Converted common example images from GIF to PNG format in noise reduction filter

[Marco Ciampa <marcoc src gnome org>]

commit 6776bf2e0b5386e9abc52f89340c7bccd3e97b6a
Author: Marco Ciampa <ciampix posteo net>
Date:   Wed Jun 26 10:12:51 2019 +0200

    Converted common example images from GIF to PNG format in noise reduction filter

 .../C/filters/examples/enhance/noise-reduction-ex1.gif | Bin 247232 -> 0 bytes
 .../C/filters/examples/enhance/noise-reduction-ex1.png | Bin 0 -> 198140 bytes
 .../C/filters/examples/enhance/noise-reduction-ex2.gif | Bin 219825 -> 0 bytes
 .../C/filters/examples/enhance/noise-reduction-ex2.png | Bin 0 -> 125078 bytes
 src/filters/enhance/noise-reduction.xml                |   8 ++++----
 5 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/images/C/filters/examples/enhance/noise-reduction-ex1.png 
b/images/C/filters/examples/enhance/noise-reduction-ex1.png
new file mode 100644
index 000000000..30420e6e1
Binary files /dev/null and b/images/C/filters/examples/enhance/noise-reduction-ex1.png differ
diff --git a/images/C/filters/examples/enhance/noise-reduction-ex2.png 
b/images/C/filters/examples/enhance/noise-reduction-ex2.png
new file mode 100644
index 000000000..960d15b8f
Binary files /dev/null and b/images/C/filters/examples/enhance/noise-reduction-ex2.png differ
diff --git a/src/filters/enhance/noise-reduction.xml b/src/filters/enhance/noise-reduction.xml
index 8c444d431..c55c6d435 100644
--- a/src/filters/enhance/noise-reduction.xml
+++ b/src/filters/enhance/noise-reduction.xml
@@ -74,8 +74,8 @@
     <mediaobject>
       <imageobject>
         <imagedata 
-          fileref="images/filters/examples/enhance/noise-reduction-ex1.gif"
-          format="GIF"/>
+          fileref="images/filters/examples/enhance/noise-reduction-ex1.png"
+          format="PNG"/>
       </imageobject>
       <caption>
         <para>
@@ -86,8 +86,8 @@
     <mediaobject>
       <imageobject>
         <imagedata 
-          fileref="images/filters/examples/enhance/noise-reduction-ex2.gif"
-          format="GIF"/>
+          fileref="images/filters/examples/enhance/noise-reduction-ex2.png"
+          format="PNG"/>
       </imageobject>
       <caption>
         <para>