Clarify grid autobreak behavior

docs/API_REFERENCE.md

@@ -24,10 +24,14 @@ Creation functions are context managers and accept common options such as `tag`,
 ## Layout Helpers
 
 - `gauge_panel(**config)`: child-window panel for grouped gauges.
-- `gauge_grid(columns=1, min_column_width=180, fit_gauges=True, **config)`: table-backed
-  wrapping gauge grid. `columns` is the maximum number of columns. If the parent is narrower than
-  `columns * min_column_width`, the grid uses fewer columns and wraps gauges onto later rows to
-  avoid horizontal scrolling. Gauges without an explicit positive width fill their grid cell.
+- `gauge_grid(columns=1, min_column_width=180, fit_gauges=True, cell_padding=12, **config)`:
+  table-backed
+  wrapping gauge grid. Pass an integer `columns` to set the maximum column count; if the parent is
+  narrower than `columns * min_column_width`, the grid uses fewer columns and wraps gauges onto
+  later rows to avoid horizontal scrolling. Pass `columns="auto"` for autobreak mode, where the
+  column count is derived entirely from the available width and `min_column_width`. Gauges without
+  an explicit positive width fill their grid cell. Increase `cell_padding` if a custom Dear PyGui
+  theme uses wider table padding or borders.
 
 ## Runtime API