Updated metadata from problem specifications.

exercises/practice/binary/.meta/config.json

@@ -26,5 +26,5 @@
     ]
   },
   "source": "All of Computer Science",
-  "source_url": "http://www.wolframalpha.com/input/?i=binary&a=*C.binary-_*MathWorld-"
+  "source_url": "https://www.wolframalpha.com/examples/mathematics/numbers/base-conversions"
 }

exercises/practice/etl/.meta/config.json

@@ -27,7 +27,7 @@
       ".meta/example.py"
     ]
   },
-  "blurb": "We are going to do the `Transform` step of an Extract-Transform-Load.",
-  "source": "Exercise by the JumpstartLab team for students at The Turing School of Software and Design.",
+  "blurb": "Change the data format for scoring a game to more easily add other languages.",
+  "source": "Based on an exercise by the JumpstartLab team for students at The Turing School of Software and Design.",
   "source_url": "https://turing.edu"
 }

exercises/practice/hexadecimal/.meta/config.json

@@ -26,5 +26,5 @@
     ]
   },
   "source": "All of Computer Science",
-  "source_url": "http://www.wolframalpha.com/examples/NumberBases.html"
+  "source_url": "https://www.wolframalpha.com/examples/mathematics/numbers/base-conversions"
 }

exercises/practice/nucleotide-count/.meta/config.json

@@ -28,5 +28,5 @@
     ]
   },
   "source": "The Calculating DNA Nucleotides_problem at Rosalind",
-  "source_url": "http://rosalind.info/problems/dna/"
+  "source_url": "https://rosalind.info/problems/dna/"
 }

exercises/practice/octal/.meta/config.json

@@ -26,5 +26,5 @@
     ]
   },
   "source": "All of Computer Science",
-  "source_url": "http://www.wolframalpha.com/input/?i=base+8"
+  "source_url": "https://www.wolframalpha.com/examples/mathematics/numbers/base-conversions"
 }

exercises/practice/point-mutations/.meta/config.json

@@ -26,5 +26,5 @@
     ]
   },
   "source": "The Calculating Point Mutations problem at Rosalind",
-  "source_url": "http://rosalind.info/problems/hamm/"
+  "source_url": "https://rosalind.info/problems/hamm/"
 }

exercises/practice/trinary/.meta/config.json

@@ -26,5 +26,5 @@
     ]
   },
   "source": "All of Computer Science",
-  "source_url": "http://www.wolframalpha.com/input/?i=binary&a=*C.binary-_*MathWorld-"
+  "source_url": "https://www.wolframalpha.com/examples/mathematics/numbers/base-conversions"
 }