Fix LINT.IfChange syntax

PiperOrigin-RevId: 654745969
Change-Id: I96b9797c0fb91cf22e5a50ef97223216683d4ec7

Author: derekmauro

absl/strings/internal/cord_internal.h

@@ -259,7 +259,7 @@ struct CordRep {
   // on the specific layout of these fields. Notably: the non-trivial field
   // `refcount` being preceded by `length`, and being tailed by POD data
   // members only.
-  // # LINT.IfChange
+  // LINT.IfChange
   size_t length;
   RefcountAndFlags refcount;
   // If tag < FLAT, it represents CordRepKind and indicates the type of node.
@@ -275,7 +275,7 @@ struct CordRep {
   // allocate room for these in the derived class, as not all compilers reuse
   // padding space from the base class (clang and gcc do, MSVC does not, etc)
   uint8_t storage[3];
-  // # LINT.ThenChange(cord_rep_btree.h:copy_raw)
+  // LINT.ThenChange(cord_rep_btree.h:copy_raw)
 
   // Returns true if this instance's tag matches the requested type.
   constexpr bool IsSubstring() const { return tag == SUBSTRING; }

absl/strings/internal/cord_rep_btree.h

@@ -684,14 +684,14 @@ inline CordRepBtree* CordRepBtree::CopyRaw(size_t new_length) const {
   // except `refcount` is trivially copyable, and the compiler does not
   // efficiently coalesce member-wise copy of these members.
   // See https://gcc.godbolt.org/z/qY8zsca6z
-  // # LINT.IfChange(copy_raw)
+  // LINT.IfChange(copy_raw)
   tree->length = new_length;
   uint8_t* dst = &tree->tag;
   const uint8_t* src = &tag;
   const ptrdiff_t offset = src - reinterpret_cast<const uint8_t*>(this);
   memcpy(dst, src, sizeof(CordRepBtree) - static_cast<size_t>(offset));
   return tree;
-  // # LINT.ThenChange()
+  // LINT.ThenChange()
 }
 
 inline CordRepBtree* CordRepBtree::Copy() const {