chore: sync-up catalog

- https://www.codewars.com/kata/positive-and-negative-regex (beta => retired)

Author: ParanoidUser

docs/README.md

@@ -57,15 +57,15 @@ repository.
                title="All published kata which are waiting for community approval and difficulty ranking">Any
             </a>
          </td>
-         <td>90</td>
+         <td>89</td>
       </tr>
       <tr>
          <td>
             <a href="/kata/retired/index.md" 
                title="Low-quality kata with a low satisfaction rate">Retired
             </a>
          </td>
-         <td>14</td>
+         <td>15</td>
       </tr>
       <tr>
          <td rowspan=2>Beginner (2 points)</td>

kata/beta/index.md

@@ -68,7 +68,6 @@
 - [Perimeter of a Rectangle](perimeter-of-a-rectangle)
 - [Phase Transitions](phase-transitions)
 - [Playing with Streams: Sum](playing-with-streams-sum)
-- [Positive & Negative Regex](positive-and-negative-regex)
 - [Primary Primes](primary-primes)
 # R
 - [Random Wallpaper](random-wallpaper)

kata/retired/index.md

@@ -8,6 +8,7 @@
 - [Number toString](number-tostring)
 # P
 - [Points in Segments](points-in-segments)
+- [Positive & Negative Regex](positive-and-negative-regex)
 # R
 - [Recursive reverse string](recursive-reverse-string)
 - [Replacement](replacement)