Spelling corrections for src directory

Spelling corrections as found by codespell and in #561.

Some reported problems were already fixed, others are fixed here, with some exceptions (a,o.):
- "referenceby" in defgen.cpp as this is in the output and I cannot oversee the consequences (looks like none, but ...)
- "HANGEUL_CHARSET" left as is as in some MS documentation is written: 'HANGUL_CHARSET: Also spelled "Hangeul". Specifies the Hangul Korean character set.' (https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-wmf/0d0b32ac-a836-4bd2-a112-b6000a1b4fc9).

1 files changed, 1 insertions, 1 deletions

diff --git a/src/definition.cpp b/src/definition.cpp
index 5b2136c..a6e58ae 100644
--- a/src/definition.cpp
+++ b/src/definition.cpp
@@ -1001,7 +1001,7 @@ bool readCodeFragment(const char *fileName,
   }
   result = transcodeCharacterStringToUTF8(result);
   if (!result.isEmpty() && result.at(result.length()-1)!='\n') result += "\n";
-  //fprintf(stderr,"readCodeFragement(%d-%d)=%s\n",startLine,endLine,result.data());
+  //printf("readCodeFragment(%d-%d)=%s\n",startLine,endLine,result.data());
   return found;
 }