TLDR 2 tweak

Author: dingosky

EntropyString.playground/Pages/TLDR2.xcplaygroundpage/Contents.swift

@@ -4,7 +4,7 @@
 //:
 //:  - You don't need random strings of length L.
 //:    - String length is a by-product, not a goal.
-//:  - You need unique strings.
+//:  - You don't need truly unique strings.
 //:    - Uniqueness is too onerous. You'll do fine with probabilistically unique strings.
 //:  - Probabilistic uniqueness involves measured risk.
 //:    - Risk is measured as *"1 in __n__ chance of generating a repeat"*

README.md

@@ -523,7 +523,7 @@ Note how the number of bytes needed is dependent on the number of characters in
 
   - You don't need random strings of length L.
     - String length is a by-product, not a goal.
-  - You need unique strings.
+  - You don't need truly unique strings.
     - Uniqueness is too onerous. You'll do fine with probabilistically unique strings.
   - Probabilistic uniqueness involves measured risk.
     - Risk is measured as *"1 in __n__ chance of generating a repeat"*