com doc/ja: Explain what consistitutes a more specific type: language/oop5/variance.xml

Commit:    984cd3ea42d50eed0e86b1e4aa7a3839ae8ed843=0AAuthor:    Yoshinari =
Takaoka <[email protected]>         Fri, 19 Feb 2021 22:15:35 +0900=0AParen=
ts:   5d5b81b2e5c03169a7b0b339afa3556545610d9d=0ABranches:  master=0A=0ALin=
k:       http://git.php.net/?p=3Ddoc/ja.git;a=3Dcommitdiff;h=3D984cd3ea42d5=
0eed0e86b1e4aa7a3839ae8ed843=0A=0ALog:=0AExplain what consistitutes a more =
specific type=0A=0ACloses GH-457=0A=0AChanged paths:=0A  M  language/oop5/v=
ariance.xml=0A=0A=0ADiff:=0Adiff --git a/language/oop5/variance.xml b/langu=
age/oop5/variance.xml=0Aindex fd2297b659..daa8be3378 100644=0A--- a/languag=
e/oop5/variance.xml=0A+++ b/language/oop5/variance.xml=0A@@ -1,6 +1,6 @@=0A=
 <?xml version=3D"1.0" encoding=3D"utf-8"?>=0A <!-- $Revision$ -->=0A-<!-- =
EN-Revision: 84b2eca1809fb0b2a7315cefb8810ca96fbeebb6 Maintainer: mumumu St=
atus: ready -->=0A+<!-- EN-Revision: 871df69f47f578c79cad7889f7e27d4b737baf=
4d Maintainer: mumumu Status: ready -->=0A <sect1 xml:id=3D"language.oop5.v=
ariance" xmlns=3D"http://docbook.org/ns/docbook">=0A =0A  <title>=E5=85=
=B1=E5=A4=89=E6=80=A7=E3=81=A8=E5=8F=8D=E5=A4=89=E6=80=A7</title>=0A@@ -15,=
6 +15,29 @@=0A   =E4=B8=80=E6=96=B9=E3=81=A7=E3=80=81=E5=8F=8D=E5=A4=89=
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=E3=81=AA=E3=81=95=E3=82=8C=E3=81=BE=E3=81=99:=0A+  <itemizedlist>=0A+   <l=
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> =E3=81=8C <type>int</type> =E3=81=AB=E5=A4=89=E6=9B=B4=E3=81=95=E3=82=
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=A7</title>=0A