style(global): fix typos

_typos.toml

@@ -1,12 +1,13 @@
 [default]
 extend-ignore-identifiers-re = [
     # Related to serialized object
-    "ser.*",
+    "ser",
+    "unser",
     # Used when dumping tfhe-rs parameters set into Sage format
     "ND.*",
     # Related to FHE strings example handling "banana"
     "ba",
-    ".*_ba",
+    "enc_ba",
     # Example with string replacing "hello" with "herlo"
     "herlo",
     # Example in trivium