Change ruby-block to ruby block

index.html

@@ -198,13 +198,13 @@ <h3 id="the-difficulties-of-ruby-processing">The difficulties of ruby processing
 <h3 id="matters-considered-by-the-placement-rules">Considerations for  simple placement rules</h3>
 
 <p>Here are the fundamental assumptions underlying the simple placement rules.  In this document we refer to the ruby 
-annotation and its base text, collectively,  as the <dfn>ruby-block</dfn>.</p>
+annotation and its base text, collectively,  as the <dfn>ruby block</dfn>.</p>
 <ol>
 <li id="l20200529007">
 <p>Ruby is used to display the reading or the meaning of the base characters.
     Therefore, the number one priority here is to avoid misreadings.
     Specifically, this method does not allow a ruby annotation which is wider than its base text to overhang the characters preceding or 
-    following the <a title="ruby-block">ruby-block</a>, whether they are kanji or kana characters.</p>
+    following the <a title="ruby block">ruby block</a>, whether they are kanji or kana characters.</p>
 
 <aside class="note" title="Overhanging surrounding characters" id="n20200529003"> The main placement method defined in [[JISX4051]]
       allows some amount of overhang over the preceding and following base characters,
@@ -217,10 +217,10 @@ <h3 id="matters-considered-by-the-placement-rules">Considerations for  simple pl
 <li id="l20200529009">Processing is done in two steps. 
     In the first step, processing of layout only considers  the relative positions of the ruby 
     annotation and its base text. 
-    In the second step,  layout processing decides the position of the <a title="ruby-block">ruby-block</a> in the line, taking into consideration the preceding and 
+    In the second step,  layout processing decides the position of the <a title="ruby block">ruby block</a> in the line, taking into consideration the preceding and 
     following characters. On the other hand, relative positions of the ruby annotation and its base text as decided in the first step are not modified 
-    in the light of any characters preceding and following the ruby-block. 
-    Also, when the ruby-block is placed at 
+    in the light of any characters preceding and following the ruby block. 
+    Also, when the ruby block is placed at 
     the line head or the line end the method used in this document does not align the first or last 
     character of the base text to the line head or the line 
     end by modifying the relative positions of the ruby annotation and its base text.