Spelling corrections

A number of spelling corrections as reported by the codespell (see: https://github.com/codespell-project/codespell) program and lists.

Some remarks:
- not considered are grammatical errors
- not considered are names in the code although there are a number that could be improved (like `childs` -> `children`)
- in the documentation it could be made clearer what are variables and what is running text (e.g. by placing variables in running text between backticks)
- some comments are in the French language, I think it would be better to have them in the English (United States version).

1 files changed, 1 insertions, 1 deletions

diff --git a/src/GudhUI/utils/K_nearest_builder.h b/src/GudhUI/utils/K_nearest_builder.h
index 34483e58..454b2587 100644
--- a/src/GudhUI/utils/K_nearest_builder.h
+++ b/src/GudhUI/utils/K_nearest_builder.h
@@ -41,7 +41,7 @@ template<typename SkBlComplex> class K_nearest_builder {
  public:
   /**
    * @brief Modify complex to be the expansion of the k-nearest neighbor
-   * symetric graph.
+   * symmetric graph.
    */
   K_nearest_builder(SkBlComplex& complex, unsigned k) : complex_(complex) {
     complex.keep_only_vertices();