Update .changelog/unreleased/improvements/3655-speed-up-ctx-build.md

Co-authored-by: Tomas Zemanovic <[email protected]>

.changelog/unreleased/improvements/3655-speed-up-ctx-build.md

@@ -1,5 +1,5 @@
 - Speeds up client commands on networks with massive balances.toml
-  files. Previosuly, to retrieve the native token of some network,
+  files. Previously, to retrieve the native token of some network,
   we had to parse these giant files. Now, we only parse the
   necessary genesis toml files required to retrieve the native token.
   ([\#3655](https://github.com/anoma/namada/pull/3655))