Updates TFC version information in toy sources notebook.

PiperOrigin-RevId: 361569008
Change-Id: I373922c2d159d922810e30589ff8739122d63bd4

Author: Johannes Ballé

models/toy_sources/toy_sources.ipynb

@@ -22,7 +22,7 @@
         "\u003e A. B. Wagner, J. Ballé\u003cbr /\u003e\n",
         "\u003e https://arxiv.org/abs/2011.05065\n",
         "\n",
-        "This code requires tensorflow-compression v2.x.\n"
+        "This notebook requires TFC v2 (`pip install tensorflow-compression==2.*`)\n"
       ]
     },
     {
@@ -38,7 +38,7 @@
         "# directly in a Colaboratory hosted runtime from Github.\n",
         "\n",
         "%tensorflow_version 2.x\n",
-        "!pip install tensorflow-compression\\>=2.0b0\n",
+        "!pip install tensorflow-compression==2.*\n",
         "![[ -e /tfc ]] || git clone https://github.com/tensorflow/compression /tfc\n",
         "%cd /tfc/models\n"
       ],