Fix typo in EndianNess in README.md

Author: HwWobbe

README.md

@@ -40,7 +40,7 @@ The core system. Build versioned JSON stamps of your working context, inject the
 See [`ContextLatticeStamp/Docs/FolderStructureGuide.md`](ContextLatticeStamp/Docs/FolderStructureGuide.md) for the full layout and decision rules.
 
 - also:
-  - 2026-05-26: considering EndianNness
+  - 2026-05-26: considering EndianNess
   - 2026-05-11: updates & 2026-05-26 ( offline )
 
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