Update tips/TIP-0039/tip-0039.md

Co-authored-by: Thibault Martinez <[email protected]>

tips/TIP-0039/tip-0039.md

@@ -63,7 +63,7 @@ It is an essential element of the IOTA protocol, as it is used:
 - [**Potential Mana**](#potential-mana) is generated by holding IOTA coins.\
   The longer the IOTA coins were unspent, the more Potential Mana is generated. When an output is spent, its Potential
   Mana is released and can be transitioned to one of its more explicit forms, i.e. Stored Mana or Block Issuance
-  Credits. Note that the Potential Mana is a quatity not explicitly tracked in the ledger state, but easily derived from
+  Credits. Note that the Potential Mana is a quantity not explicitly tracked in the ledger state, but easily derived from
   it.
 - [**Block Issuance Credit**](#block-issuance-credit) (BIC) is the form of Mana used as an anti-spam mechanism to the
   block issuance process. During a transaction, Stored or Potential Mana can be _allotted as BIC_, which moves the Mana