remove https

docs/tutorials/One_Sinkhorn.ipynb

@@ -57,7 +57,7 @@
    "source": [
     "## From texts to word histograms\n",
     "\n",
-    "We adapt a [keras NLP tutorial](https://keras.io/examples/nlp/pretrained_word_embeddings/) to preprocess raw text (here a subset of texts from the [newsgroup20](https://scikit-learn.org/stable/modules/generated/sklearn.datasets.fetch_20newsgroups.html) database) and turn them into word embeddings histograms; see [here](https://colab.research.google.com/drive/1uCK_qBpOb8yY32ABU_GcykSKE-Q-yjfi) for detailed preprocessing.\n",
+    "We adapt a [keras NLP tutorial](http://keras.io/examples/nlp/pretrained_word_embeddings/) to preprocess raw text (here a subset of texts from the [newsgroup20](http://scikit-learn.org/stable/modules/generated/sklearn.datasets.fetch_20newsgroups.html) database) and turn them into word embeddings histograms; see [here](https://colab.research.google.com/drive/1uCK_qBpOb8yY32ABU_GcykSKE-Q-yjfi) for detailed preprocessing.\n",
     "\n",
     "This helps us recover 635 histograms supported on 4000 words, each represented by a 50-dimensional vector. We download that data using an url"
    ]