Update test/spec.txt

test/spec.txt

@@ -3696,9 +3696,8 @@ in some browsers.)
 The following rules define [list items]:
 
 1.  **Basic case.**  If a sequence of lines *Ls* constitute a sequence of
-    blocks *Bs* starting with a [non-whitespace character] and not separated
-    from each other by more than one blank line, and *M* is a list
-    marker of width *W* followed by 1 ≤ *N* ≤ 4 spaces, then the result
+    blocks *Bs* starting with a [non-whitespace character], and *M* is a
+    list marker of width *W* followed by 1 ≤ *N* ≤ 4 spaces, then the result
     of prepending *M* and the following spaces to the first line of
     *Ls*, and indenting subsequent lines of *Ls* by *W + N* spaces, is a
     list item with *Bs* as its contents.  The type of the list item
@@ -4008,8 +4007,7 @@ A start number may not be negative:
 
 2.  **Item starting with indented code.**  If a sequence of lines *Ls*
     constitute a sequence of blocks *Bs* starting with an indented code
-    block and not separated from each other by more than one blank line,
-    and *M* is a list marker of width *W* followed by
+    block, and *M* is a list marker of width *W* followed by
     one space, then the result of prepending *M* and the following
     space to the first line of *Ls*, and indenting subsequent lines of
     *Ls* by *W + 1* spaces, is a list item with *Bs* as its contents.
@@ -7334,7 +7332,8 @@ A [link title](@)  consists of either
   backslash-escaped, or
 
 - a sequence of zero or more characters between matching parentheses
-  (`(...)`), including a `)` character only if it is backslash-escaped.
+  (`(...)`), including a `(` or `)` character only if it is
+  backslash-escaped.
 
 Although [link titles] may span multiple lines, they may not contain
 a [blank line].
@@ -9483,7 +9482,8 @@ just above `stack_bottom` (or the first element if `stack_bottom`
 is NULL).
 
 We keep track of the `openers_bottom` for each delimiter
-type (`*`, `_`).  Initialize this to `stack_bottom`.
+type (`*`, `_`) and each length of the closing delimiter run
+(modulo 3).  Initialize this to `stack_bottom`.
 
 Then we repeat the following until we run out of potential
 closers: