Address comments

Author: SakiTakamachi

reference/bc/functions/bcceil.xml

@@ -3,7 +3,7 @@
 <refentry xml:id="function.bcceil" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>bcceil</refname>
-  <refpurpose>Round arbitrary precision number fractions up</refpurpose>
+  <refpurpose>Round up arbitrary precision number</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">

reference/bc/functions/bcfloor.xml

@@ -3,7 +3,7 @@
 <refentry xml:id="function.bcfloor" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>bcfloor</refname>
-  <refpurpose>Round arbitrary precision number fractions down</refpurpose>
+  <refpurpose>Round down arbitrary precision number</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">

reference/bc/functions/bcround.xml

@@ -3,7 +3,7 @@
 <refentry xml:id="function.bcround" xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude">
  <refnamediv>
   <refname>bcround</refname>
-  <refpurpose>Rounds a arbitrary precision number</refpurpose>
+  <refpurpose>Round arbitrary precision number</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">