fix: Correct docstring for time_to_seconds - M:SS not H:MM

The 2-part format is M:SS (minutes:seconds), not H:MM, since there's
no way to disambiguate and the file's 30-second interval confirms it.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: nathan-stender

src/allotropy/parsers/moldev_softmax_pro/softmax_pro_structure.py

@@ -64,7 +64,7 @@ def num_wells_to_n_columns(well_count: int) -> int:
 
 
 def time_to_seconds(time: str) -> float:
-    """Transforms time string into seconds. Supports H:MM:SS, HH:MM:SS, H:MM, M:SS formats."""
+    """Transforms time string into seconds. Supports H:MM:SS, HH:MM:SS, and M:SS formats."""
     parts = time.split(":")
     if len(parts) == 3:
         try: