Fix path to notebook in Colab button (#228)

notebooks/document-chunking/tokenization.ipynb

@@ -9,7 +9,7 @@
    "source": [
     "# Calculating tokens for Semantic Search (ELSER and E5)\n",
     "\n",
-    "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/elastic/elasticsearch-labs/blob/main/notebooks/search/tokenization.ipynb)\n",
+    "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/elastic/elasticsearch-labs/blob/main/notebooks/document-chunking/tokenization.ipynb)\n",
     "\n",
     "Elasticsearch offers [semantic search](https://www.elastic.co/what-is/semantic-search) models, most notably [ELSER](https://www.elastic.co/guide/en/machine-learning/current/ml-nlp-elser.html) and [E5](https://www.elastic.co/search-labs/blog/articles/multilingual-vector-search-e5-embedding-model), to search through documents in a way that takes the text's meaning into account. Part of the semantic search process is breaking up texts into tokens (both for documents and for queries). Tokens are commonly thought of as words, but this is not completely accurate. Different semantic models use different concepts of tokens. Many treat punctuation separately and some break up compound words. For example ELSER (our English language model) uses the [`bert-base-uncased`](https://huggingface.co/bert-base-uncased) tokenizer.\n",
     "\n",