[totem/mallard-documentation: 2459/2501] Fix grammar

[Jeremy Bicha <jbicha src gnome org>]

commit a05cf6fb312415fa61b54c1a5c74321314d8e423
Author: Andre Klapper <a9016009 gmx de>
Date:   Fri Jan 11 18:07:19 2019 +0100

    Fix grammar

 help/C/screenshot.page | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/help/C/screenshot.page b/help/C/screenshot.page
index d8503c6b..dd9428e1 100644
--- a/help/C/screenshot.page
+++ b/help/C/screenshot.page
@@ -5,7 +5,7 @@
   <info>
     <link type="guide" xref="index#advanced-options"/>
     <revision pkgversion="3.30.0" version="0.1" date="2019-01-09" status="draft"/>
-    <desc>Take screenshots from the movie.</desc>
+    <desc>Take a screenshot from a video.</desc>
     <credit type="author">
       <name>Marta Bogdanowicz</name>
       <email>majus85 gmail com</email>
@@ -22,7 +22,7 @@
   <title>Screenshots</title>
 
   <p>
-  Take screenshot while watching movie. Follow these steps:
+  To take a screenshot while watching a movie, follow these steps:
   </p>
 
   <steps>