Update 4_working_with_stac.ipynb

updated pypi pip install to 'unity-sds-client'

Author: rtapella

jupyter-notebooks/tutorials/4_working_with_stac.ipynb

@@ -11,7 +11,7 @@
     "\n",
     "The unity_py library is required for usage. It can be installed by one of the two commands:\n",
     "\n",
-    "1. pypi: `pip install unity_py` -- coming soon\n",
+    "1. pypi: `pip install unity-sds-client`\n",
     "2. From git: main branch: `python -m pip install git+https://github.com/unity-sds/unity-py.git`\n",
     "3. From git: a specific branch: `python -m pip install git+https://github.com/unity-sds/unity-py.git@develop`\n",
     " "