[gnome-calculator] Fixed typo in help about square root symbol

[Ekaterina Gerasimova <kat src gnome org>]

commit 60cb0dfa19a364ebca7ed5dacd53b5614857513e
Author: Sebastian Rasmussen <sebras gmail com>
Date:   Sat Feb 21 23:21:57 2015 +0100

    Fixed typo in help about square root symbol
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744915

 help/C/power.page |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/help/C/power.page b/help/C/power.page
index d5977ca..241c209 100644
--- a/help/C/power.page
+++ b/help/C/power.page
@@ -12,6 +12,11 @@
       <email its:translate="no">kittykat3756 gmail com</email>
       <years>2015</years>
     </credit>
+    <credit type="editor">
+      <name>Sebastian Rasmussen</name>
+      <email its:translate="no">sebras gmail com</email>
+      <years>2015</years>
+    </credit>
 
     <desc>Learn to enter roots and powers into the calculator.</desc>
   </info>
@@ -42,7 +47,7 @@
   <p>If your keyboard does not have a <key>^</key> key you can use <key>*</key>
   twice.</p>
 
-  <p>Square roots can be calculated using the  symbol
+  <p>Square roots can be calculated using the √ symbol
   (<keyseq><key>Ctrl</key><key>R</key></keyseq>).</p>
 
   <example>