Synced practice exercise metadata to problem specifications. (#3574)

Author: BethanyG

exercises/practice/hello-world/.meta/config.json

@@ -27,7 +27,7 @@
       ".meta/example.py"
     ]
   },
-  "blurb": "The classical introductory exercise. Just say \"Hello, World!\".",
+  "blurb": "Exercism's classic introductory exercise. Just say \"Hello, World!\".",
   "source": "This is an exercise to introduce users to using Exercism",
   "source_url": "https://en.wikipedia.org/wiki/%22Hello,_world!%22_program"
 }

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

@@ -13,7 +13,7 @@
       ".meta/example.py"
     ]
   },
-  "blurb": "Help Eluid count the number of eggs in her chicken coop by counting the number of 1 bits in a binary representation.",
+  "blurb": "Help Eliud count the number of eggs in her chicken coop by counting the number of 1 bits in a binary representation.",
   "source": "Christian Willner, Eric Willigers",
   "source_url": "https://forum.exercism.org/t/new-exercise-suggestion-pop-count/7632/5"
 }

exercises/practice/pythagorean-triplet/.meta/config.json

@@ -31,7 +31,7 @@
       ".meta/example.py"
     ]
   },
-  "blurb": "There exists exactly one Pythagorean triplet for which a + b + c = 1000. Find the product a * b * c.",
+  "blurb": "There exists exactly one Pythagorean triplet for which a + b + c = 1000. Find the triplet.",
   "source": "Problem 9 at Project Euler",
   "source_url": "https://projecteuler.net/problem=9"
 }

exercises/practice/spiral-matrix/.meta/config.json

@@ -22,5 +22,5 @@
   },
   "blurb": "Given the size, return a square matrix of numbers in spiral order.",
   "source": "Reddit r/dailyprogrammer challenge #320 [Easy] Spiral Ascension.",
-  "source_url": "https://www.reddit.com/r/dailyprogrammer/comments/6i60lr/20170619_challenge_320_easy_spiral_ascension/"
+  "source_url": "https://web.archive.org/web/20230607064729/https://old.reddit.com/r/dailyprogrammer/comments/6i60lr/20170619_challenge_320_easy_spiral_ascension/"
 }

exercises/practice/transpose/.meta/config.json

@@ -27,5 +27,5 @@
   },
   "blurb": "Take input text and output it transposed.",
   "source": "Reddit r/dailyprogrammer challenge #270 [Easy].",
-  "source_url": "https://www.reddit.com/r/dailyprogrammer/comments/4msu2x/challenge_270_easy_transpose_the_input_text"
+  "source_url": "https://web.archive.org/web/20230630051421/https://old.reddit.com/r/dailyprogrammer/comments/4msu2x/challenge_270_easy_transpose_the_input_text/"
 }