Docs: Fonts: amends.

docs/FONTS.md

diff --git a/docs/FONTS.md b/docs/FONTS.md
index f0fbd85..ac93bca 100644
--- a/docs/FONTS.md
+++ b/docs/FONTS.md
@@ -79,7 +79,7 @@
 
 ### (5) Reduce texture resizes/copy on startup
 
-🆕 Since 1.92, the ImFontAtlas is initially created using a 512x128 texture, then grows as glyphs and fonts are registered. Growth leads to a copy, and both the old and new sized textures are present in memory. If you use known fonts and want to reduce initial growth, you may set `TexMinWidth` and `TexMinHeight` during initializaton.
+🆕 Since 1.92, the ImFontAtlas is initially created using a 512x128 texture, then grows as glyphs and fonts are used. Atlas growth leads to alloc+copy, and both the old and new sized textures are present in memory for a short time (typically one frame). If you use known fonts and want to reduce initial growth, you may set `TexMinWidth` and `TexMinHeight` during initializaton.
 
 ```cpp
 ImFontAtlas* atlas = io.Fonts;