[gnome-calculator] help: Fix superscript page style

[Robert Roth <robertroth src gnome org>]

commit 1f9e3bfeace3ca15969aa802cc515f9ab474e8da
Author: Pranali Deshmukh <pranali21293 gmail com>
Date:   Mon Oct 12 18:57:38 2020 +0100

    help: Fix superscript page style
    
    Replace 'e.g.' with 'such as'.
    
    Ref: #185

 help/C/superscript.page | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/help/C/superscript.page b/help/C/superscript.page
index ed2888ea..628b41c2 100644
--- a/help/C/superscript.page
+++ b/help/C/superscript.page
@@ -19,7 +19,7 @@
        <title>Superscript and Subscript</title>
 
     <p>
-    Some equations may require numbers to be entered in superscript or subscript form. e.g.
+    Some equations may require numbers to be entered in superscript or subscript form, such as:
     </p>
     <example>
     <p>
@@ -35,6 +35,6 @@
     To enter superscript numbers use <keyseq><key>Ctrl</key>number</keyseq>, for subscript numbers use 
<keyseq><key>Alt</key>number</keyseq>. 
     </p>
     <p>
-    The number mode returns to normal when entering the next non-number character (e.g. +, -).
+    The number mode returns to normal when entering the next non-number character, such as "+" or "-".
     </p>
 </page>