Fix typos

Author: jgraham

index.bs

@@ -3178,7 +3178,7 @@ The [=remote end steps=] with |command parameters| are:
 
 <div algorithm>
 
-The <dfn export>WebDriver-BiDi page show</dfn> steps given <var
+The <dfn export>WebDriver BiDi page show</dfn> steps given <var
 ignore>context</var> and |navigation status| are:
 
 Issue: Do we want to expose a `browsingContext.pageShow event? In that case we'd
@@ -3196,7 +3196,7 @@ bfcache restore, and also add the persisted status to the data.
 
 <div algorithm>
 
-The <dfn export>WebDriver-BiDi pop state</dfn> steps given <var
+The <dfn export>WebDriver BiDi pop state</dfn> steps given <var
 ignore>context</var> and |navigation status| are:
 
  1. If the [=current session=] is null, return.