Update README.md

README.md

@@ -76,7 +76,7 @@ Others objectives in mind are:
 
 XELIS use a blockDAG with following rules:
 - A block is considered `Sync Block` when the block height is less than `TOP_HEIGHT - STABLE_LIMIT` and it's the unique block at a specific height (or only ordered block at its height and don't have lower cumulative difficulty than previous blocks).
-- A block is considered `Side Block` when block height is less than or equal to height of past 8 topographical blocks.
+- A block is considered `Side Block` when block height is less than or equal to height of past 8 topological blocks.
 - A block is considered `Orphaned` when the block is not ordered in DAG (no topological height for it).
 - A height is not unique anymore.
 - Topo height is unique for each block, but can change when the DAG is re-ordered up to `TOP_HEIGHT - STABLE_LIMIT`.
@@ -519,4 +519,4 @@ Current dev fee curve is as following:
 - 15% from block 0 to 1 250 000 (expected time is ~6 months with side blocks from blockDAG)
 - 10% from block 1 250 001 to 3 000 000 (expected time is another ~6 months with side blocks from blockDAG and network growing)
 - 5% from 3 000 001 until the project being developed and stable enough to reduce it.
-- 
+-