Update submodule06_putting_it_all_together.ipynb

fix broken Spades link to match the one used in the GCP notebook

AWS/submodule06_putting_it_all_together.ipynb

@@ -231,7 +231,7 @@
    "source": [
     "## Assembling the Genome (Spades)\n",
     "----------\n",
-    "The assembler we are using here, [`spades`](https://cab.spbu.ru/files/release3.15.4/manual.html) is a commonly used assembler for small genomes, think bacteria and viruses. For larger genomes we recommend using something like [`bowtie2`]() or [`bwa`](). \n",
+    "The assembler we are using here, [`spades`](https://bio.tools/spades) is a commonly used assembler for small genomes, think bacteria and viruses. For larger genomes we recommend using something like [`bowtie2`]() or [`bwa`](). \n",
     "\n",
     "<p align=\"center\">\n",
     "<img src=\"images/assembly.jpg\" alt=\"assembly\" width=\"50%\"/>\n",