fix typo (#559)

Author: Ikko Eltociear Ashimine

GraphNeuralNetworks/docs/src/tutorials/node_classification_pluto.md

@@ -59,7 +59,7 @@ end;</code></pre>
 ## Visualize
 ```@raw html
 <div class="markdown">
-<p>We want to visualize the the outputs of the results using t-distributed stochastic neighbor embedding (tsne) to embed our output embeddings onto a 2D plane.</p></div>
+<p>We want to visualize the outputs of the results using t-distributed stochastic neighbor embedding (tsne) to embed our output embeddings onto a 2D plane.</p></div>
 
 <pre class='language-julia'><code class='language-julia'>function visualize_tsne(out, targets)
     z = tsne(out, 2)

GraphNeuralNetworks/docs/src_tutorials/introductory_tutorials/node_classification_pluto.jl

@@ -44,7 +44,7 @@ Let us start off by importing some libraries. We will be using Flux.jl and `Grap
 # ╔═╡ 0d556a7c-d4b6-4cef-806c-3e1712de0791
 md"""
 ## Visualize
-We want to visualize the the outputs of the results using t-distributed stochastic neighbor embedding (tsne) to embed our output embeddings onto a 2D plane.
+We want to visualize the outputs of the results using t-distributed stochastic neighbor embedding (tsne) to embed our output embeddings onto a 2D plane.
 """
 
 # ╔═╡ 997b5387-3811-4998-a9d1-7981b58b9e09