[gimp-book-painting] Small revision on GIMP brushes topic ...

[Americo Gobbo <amerigo src gnome org>]

commit 9a96b80f130555707299ea4bd49b0c7aa27be006
Author: Americo Gobbo <jag rabisco gmail com>
Date:   Sat Jul 14 13:07:27 2018 -0300

    Small revision on GIMP brushes topic ...

 parametric-brushes.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/parametric-brushes.md b/parametric-brushes.md
index bbde480..0ee6ba9 100644
--- a/parametric-brushes.md
+++ b/parametric-brushes.md
@@ -8,7 +8,8 @@ Date: 2018 June
 </figure>
 
 ### GIMP Brushes
-GIMP has two types of brushes: the parametric and raster brushes (.gbr and .gih). The scope of this article 
mainly demonstrates the quality and possibility of parametric brushes. I am writing a dedicated article about 
the GIMP brushes and I have pasted the short intro about them:
+GIMP provides two very different types of brushes: the parametric (.vbr) and raster (.gbr and .gih).
+The scope of this article mainly demonstrates the quality and possibility of parametric brushes. I am 
writing a dedicated article about the GIMP brushes and I have pasted the short intro about them:
 
> The parametric brush is a vector brush and it has the great possibilities and flexibility for many tasks 
> in different tasks and branches (graphic design, photography, digital painting, etc...)
 The raster brush is also versatile and has great pictorial qualities but, is more complex to build because 
is managed as an image.