[gimp-help] Fixed some keycap headings

[Marco Ciampa <marcoc src gnome org>]

commit 83f057f31f4a709125c71cabef05bfe13ab806d7
Author: Marco Ciampa <ciampix posteo net>
Date:   Tue Feb 11 11:02:49 2020 +0100

    Fixed some keycap headings

 src/toolbox/selection/free.xml | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)
---
diff --git a/src/toolbox/selection/free.xml b/src/toolbox/selection/free.xml
index 574ce5d44..6d7e6db5c 100644
--- a/src/toolbox/selection/free.xml
+++ b/src/toolbox/selection/free.xml
@@ -202,11 +202,14 @@
       Since GIMP-2.10.12, selection modes work differently. Marching ants 
       come with a continuous line, meaning that the selection is not validated 
       yet and that you can still change the selection shape (mouse pointer 
-      comes with the Move icon). But you can't use "Hold Shift, Ctrl...) yet. 
-      You have to hit the <keycap>Enter</keycap> key. Then you can use Hold 
-      Shift to add a selection, Hold Ctrl to subtract a selection, Hold Shift 
-      + Ctrl to intersect two selections. When you are satisfied with 
-      your changes, hit <keycap>Enter</keycap> key to validate the selection.
+      comes with the Move icon). But you can't use (holding it pressed)
+      <keycap>Shift</keycap>, <keycap>Ctrl</keycap>...) yet. 
+      You have to hit the <keycap>Enter</keycap> key. Then you can use
+      (holding them pressed) <keycap>Shift</keycap> to add a selection,
+      <keycap>Ctrl</keycap> to subtract a selection, <keycap>Shift</keycap> 
+      + <keycap>Ctrl</keycap> to intersect two selections.
+      When you are satisfied with your changes, hit <keycap>Enter</keycap>
+      key to validate the selection.
     </para>
   </sect3>
 </sect2>