Regexp doc RST fixes

doc/regexp.rst

@@ -12,18 +12,26 @@ challenging.  See the following three excellent articles by Russ Cox
 for background:
 
 * http://swtch.com/~rsc/regexp/regexp1.html
+
 * http://swtch.com/~rsc/regexp/regexp2.html
+
 * http://swtch.com/~rsc/regexp/regexp3.html
 
 Ecmascript regular expression set is described in E5 Section 15.10,
 and includes:
 
 * Disjunction
+
 * Quantifiers, counted repetition and both greedy and minimal variants
+
 * Assertions, negative and positive lookaheads
+
 * Character classes, normal and inverted
+
 * Captures and backreferences
+
 * Unicode character support
+
 * Unanchored matching (only) (e.g. ``/x/.exec('fooxfoo')`` matches ``'x'``)
 
 Counted repetition quantifiers, assertions, captures, and backreferences
@@ -36,10 +44,14 @@ and compactness.  More generally, the following prioritized requirements
 should be fulfilled:
 
 #. Ecmascript compatibility
+
 #. Compactness
+
 #. Avoiding deep or unbounded C recursion, and providing recursion and
    execution time sanity limits
+
 #. Regexp execution performance
+
 #. Regexp compilation performance
 
 Further, it should be possible to leave out regexp support during
@@ -1201,4 +1213,3 @@ Executor
 
 * Optimized primitive for testing a regexp (match without captures) would be
   easy by just skipping 'save' instructions but would waste space.
-