[DOC] DFT instead of PAA in SFA docstring (#1849)

* Documentation fix. Replace PAA by DFT
aeon-toolkit · Jul 26, 2024 · d9142cd · d9142cd
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diff --git a/aeon/transformations/collection/dictionary_based/_sfa.py b/aeon/transformations/collection/dictionary_based/_sfa.py
@@ -46,7 +46,7 @@ class SFA(BaseCollectionTransformer):
     Parameters
     ----------
     word_length:         int, default = 8
-        length of word to shorten window to (using PAA)
+        length of word to shorten window to (using DFT)
 
     alphabet_size:       int, default = 4
         number of values to discretise each value to

diff --git a/aeon/transformations/collection/dictionary_based/_sfa_fast.py b/aeon/transformations/collection/dictionary_based/_sfa_fast.py
@@ -59,7 +59,7 @@ class SFAFast(BaseCollectionTransformer):
     Parameters
     ----------
     word_length : int, default = 8
-        Length of word to shorten window to (using PAA).
+        Length of word to shorten window to (using DFT).
     alphabet_size : int, default = 4
         Number of values to discretise each value to.
     window_size : int, default = 12