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/template.cpp b/src/template.cpp
index 228da4d..173df74 100644
--- a/src/template.cpp
+++ b/src/template.cpp
@@ -4693,7 +4693,7 @@ void TemplateLexer::tokenize(QList<TemplateToken> &tokens)
         {
           state=StateBeginTemplate;
         }
-        else if (c!=' ' && c!='\t' && c!='\n') // non-whitepace text
+        else if (c!=' ' && c!='\t' && c!='\n') // non-whitespace text
         {
           emptyOutputLine=FALSE;
         }