add_inline_child, not word and input (#1339)

* add_inline_child, not word and input

* none

book/invalidation.md

@@ -398,7 +398,7 @@ idempotent. I found:[^exercises]
 - In `new_line`, `BlockLayout` will append to its `children` array.
 - In `add_inline_child`, `BlockLayout` will append to the `children`
   array of some `LineLayout` child.
-- In `word` and `input`, `BlockLayout` will call `get_font`, as will
+- In `add_inline_child`, `BlockLayout` will call `get_font`, as will
   the `TextLayout` and `InputLayout` methods.
 - Basically every layout method calls `dpx`.
 
@@ -2665,7 +2665,7 @@ build* is what browser engineers use when debugging or developing new
 features, and also in automated tests. Debug builds
 also compile in debugging features like [sanitizers][ffx-sanitizers],
 while release builds instead use heavyweight optimizations
-[like *profile-guided optimization*][chrome-pgo] (PGO).
+[like *profile-guided optimization*][chrome-pgo].
 
 :::