[clang-tools-extra] [clang-doc] lower filename length limit by 5 (PR #155511)

[Petr Hosek via cfe-commits]

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@@ -778,7 +778,7 @@ static void populateSymbolInfo(SymbolInfo &I, const T *D, const FullComment *C,
     Mangler->mangleCXXVTable(CXXD, MangledStream);
   else
     MangledStream << D->getNameAsString();
-  if (MangledName.size() > 255)
+  if (MangledName.size() > 250)
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petrhosek wrote:

Can we include a comment explaining why it's 250?

https://github.com/llvm/llvm-project/pull/155511