fix: corrected tf citation (#10)

docs/intro.md

@@ -16,7 +16,7 @@ convolutional processing downstream.
 tiled datasets that follow the Flip-n-Slide strategy from a single large 
 scientific image. The package is flexible, providing tiled outputs as `numpy` 
 arrays {cite}`harris_2020`, `PyTorch` tensors {cite}`paszke_2019`, or `Tensorflow` tensors 
-{cite}`abadi 2015` depending on user preference,allowing it to be efficiently slotted into 
+{cite}`abadi_2015` depending on user preference,allowing it to be efficiently slotted into 
 existing machine learning pipelines. `flipnslide` allows the user to select preferred 
 tile size and save modes, and it can be implemented on existing data or used to 
 download and tile any Earth Observation datasets from Planetary Computer