🤖 Auto-sync docs, metadata, and filepaths (exercism#3036)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

exercises/practice/killer-sudoku-helper/.docs/instructions.md

@@ -74,7 +74,7 @@ You can also find Killer Sudokus in varying difficulty in numerous newspapers, a
 
 ## Credit
 
-The screenshots above have been generated using [F-Puzzles.com](https://www.f-puzzles.com/), a Puzzle Setting Tool by Eric Fox.
+The screenshots above have been generated using F-Puzzles.com, a Puzzle Setting Tool by Eric Fox.
 
 [sudoku-rules]: https://masteringsudoku.com/sudoku-rules-beginners/
 [killer-guide]: https://masteringsudoku.com/killer-sudoku/

exercises/practice/rate-limiter/.meta/config.json

@@ -15,6 +15,9 @@
     ],
     "editor": [
       "src/main/java/TimeSource.java"
+    ],
+    "invalidator": [
+      "build.gradle"
     ]
   },
   "blurb": "Practice stateful logic and time handling by implementing a fixed-window rate limiter"

exercises/practice/triangle/.docs/instructions.md

@@ -14,7 +14,8 @@ A _scalene_ triangle has all sides of different lengths.
 For a shape to be a triangle at all, all sides have to be of length > 0, and the sum of the lengths of any two sides must be greater than or equal to the length of the third side.
 
 ~~~~exercism/note
-We opted to not include tests for degenerate triangles (triangles that violate these rules) to keep things simpler.
+_Degenerate triangles_ are triangles where the sum of the length of two sides is **equal** to the length of the third side, e.g. `1, 1, 2`.
+We opted to not include tests for degenerate triangles in this exercise.
 You may handle those situations if you wish to do so, or safely ignore them.
 ~~~~