Improved documentation.

src/MiniDocs/NanoID.class.st

@@ -1,9 +1,16 @@
 "
 I'm run an implementation of the [Nano ID](https://github.com/ai/nanoid) tiny, secure URL-friendly unique string ID generator via its [Nim implementation](https://github.com/icyphox/nanoid.nim).
 
-I have hard coded:
+The Nim script has hard coded:
 
   * a [base 58 encoding](https://medium.com/concerning-pharo/understanding-base58-encoding-23e673e37ff6) alphabet to avoid similar looking letter and the use of non-alphanumeric characters.
+  * a 12 characters length output, which gives [a pretty low probability collision](https://zelark.github.io/nano-id-cc/) for the previous alphabet: 
+    ~616 years needed, in order to have a 1% probability of at least one collision at a speed of 1000 IDs per hour.
+    This is more than enough for our unique IDs applications, mostly in the documentation context,
+    which consists of  hand crafted  and/or programmatically produced notes ,
+    for example in data narratives, book(lets) and TiddlyWiki tiddlers of tens or hundreds of notes at most,
+    unevenly produced between hours, days and/or weeks.. 
+    
 "
 Class {
 	#name : #NanoID,