Cleanup some errors in typedef comments and remove duplicated HOWTO from zbuff_decompress.c
diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index 911dfeb..c60a1ee 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -2694,7 +2694,7 @@
void* dictContent;
size_t dictContentSize;
ZSTD_CCtx* refContext;
-}; /* typedef'd tp ZSTD_CDict within zstd.h */
+}; /* typedef'd tp ZSTD_CDict within "zstd.h" */
ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictSize, ZSTD_parameters params, ZSTD_customMem customMem)
{