README.md in regexp-examples-1.2.1 vs README.md in regexp-examples-1.3.0

@@ -186,11 +186,11 @@
  (E.g. in this case, the second `a*` should always evaluate to an empty string, because the previous `a*` was greedy.)
  However, patterns like this are highly unusual...
 * Nested repeat operators are incorrectly parsed, e.g. `/b{2}{3}/` - which *should* be interpreted like `/b{6}/`. (However, there is probably no reason
  to ever write regexes like this!)
 
-Some of the most obscure regexp features are not even mentioned in [the ruby docs](ruby-doc.org/core/Regexp.html).
+Some of the most obscure regexp features are not even mentioned in [the ruby docs](http://ruby-doc.org/core/Regexp.html).
 However, full documentation on all the intricate obscurities in the ruby (version 2.x) regexp parser can be found
 [here](https://raw.githubusercontent.com/k-takata/Onigmo/master/doc/RE).
 
 ## Impossible features ("illegal syntax")
 
@@ -198,10 +198,10 @@
 If you'd like to understand this in more detail, check out what I had to say in [my blog post](http://tom-lord.weebly.com/blog/reverse-engineering-regular-expressions) about this gem.
 
 Using any of the following will raise a `RegexpExamples::IllegalSyntax` exception:
 
 * Lookarounds, e.g. `/foo(?=bar)/`, `/foo(?!bar)/`, `/(?<=foo)bar/`, `/(?<!foo)bar/`
-* [Anchors](http://ruby-doc.org/core-2.2.0/Regexp.html#class-Regexp-label-Anchors) (`\b`, `\B`, `\G`, `^`, `\A`, `$`, `\z`, `\Z`), e.g. `/\bword\b/`, `/line1\n^line2/`
+* [Anchors](http://ruby-doc.org/core/Regexp.html#class-Regexp-label-Anchors) (`\b`, `\B`, `\G`, `^`, `\A`, `$`, `\z`, `\Z`), e.g. `/\bword\b/`, `/line1\n^line2/`
   * Anchors are really just special cases of lookarounds!
   * However, a special case has been made to allow `^`, `\A` and `\G` at the start of a pattern; and to allow `$`, `\z` and `\Z` at the end of pattern. In such cases, the characters are effectively just ignored.
 * Subexpression calls (`\g`), e.g. `/(?<name> ... \g<name>* )/`
 
 (Note: Backreferences are not really "regular" either, but I got these to work with a bit of hackery.)