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).

7 files changed, 8 insertions, 8 deletions

diff --git a/src/GudhUI/todo.txt b/src/GudhUI/todo.txt
index 19d99a77..e59d06d4 100644
--- a/src/GudhUI/todo.txt
+++ b/src/GudhUI/todo.txt
@@ -18,5 +18,5 @@ x faire le lien MainWindow - Model
 
 
 -- bug
-x bug ordre contraction -> just that first vertex placement dont work great
+x bug ordre contraction -> just that first vertex placement doesn't work great
 x pb construction rips
diff --git a/src/GudhUI/utils/Critical_points.h b/src/GudhUI/utils/Critical_points.h
index 97e58737..65695434 100644
--- a/src/GudhUI/utils/Critical_points.h
+++ b/src/GudhUI/utils/Critical_points.h
@@ -103,7 +103,7 @@ template<typename SkBlComplex> class Critical_points {
       // reduced to one point -> contractible
       return 1;
     else
-      // we dont know
+      // we don't know
       return 2;
   }
 
diff --git a/src/GudhUI/utils/Edge_contractor.h b/src/GudhUI/utils/Edge_contractor.h
index 0707b186..a71d0742 100644
--- a/src/GudhUI/utils/Edge_contractor.h
+++ b/src/GudhUI/utils/Edge_contractor.h
@@ -65,7 +65,7 @@ template<typename SkBlComplex> class Edge_contractor {
 
   /**
    * @brief Modify complex to be the expansion of the k-nearest neighbor
-   * symetric graph.
+   * symmetric graph.
    */
   Edge_contractor(SkBlComplex& complex, unsigned num_contractions) :
       complex_(complex), num_contractions_(num_contractions) {
diff --git a/src/GudhUI/utils/Furthest_point_epsilon_net.h b/src/GudhUI/utils/Furthest_point_epsilon_net.h
index 6eb71071..195d0014 100644
--- a/src/GudhUI/utils/Furthest_point_epsilon_net.h
+++ b/src/GudhUI/utils/Furthest_point_epsilon_net.h
@@ -27,7 +27,7 @@ template<typename SkBlComplex> class Furthest_point_epsilon_net {
 
   /**
    * Let V be the set of vertices.
-   * Initially v0 is one arbitrarly vertex and the set V0 is {v0}.
+   * Initially v0 is one, arbitrary, vertex and the set V0 is {v0}.
    * Then Vk is computed as follows.
    * First we compute the vertex pk that is the furthest from Vk
    * then Vk = Vk \cup pk.
@@ -54,7 +54,7 @@ template<typename SkBlComplex> class Furthest_point_epsilon_net {
 
   /**
    * @brief Modify complex to be the expansion of the k-nearest neighbor
-   * symetric graph.
+   * symmetric graph.
    */
   Furthest_point_epsilon_net(SkBlComplex& complex) :
       complex_(complex) {
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();
diff --git a/src/GudhUI/utils/Lloyd_builder.h b/src/GudhUI/utils/Lloyd_builder.h
index c042564f..57e3dc0f 100644
--- a/src/GudhUI/utils/Lloyd_builder.h
+++ b/src/GudhUI/utils/Lloyd_builder.h
@@ -27,7 +27,7 @@ template<typename SkBlComplex> class Lloyd_builder {
 
   /**
    * @brief Modify complex to be the expansion of the k-nearest neighbor
-   * symetric graph.
+   * symmetric graph.
    */
   Lloyd_builder(SkBlComplex& complex, unsigned num_iterations) : complex_(complex), dim(-1) {
     if (!complex_.empty()) {
diff --git a/src/GudhUI/utils/Vertex_collapsor.h b/src/GudhUI/utils/Vertex_collapsor.h
index 030e4bb0..b1c48efd 100644
--- a/src/GudhUI/utils/Vertex_collapsor.h
+++ b/src/GudhUI/utils/Vertex_collapsor.h
@@ -31,7 +31,7 @@ template<typename SkBlComplex> class Vertex_collapsor {
 
   /**
    * @brief Modify complex to be the expansion of the k-nearest neighbor
-   * symetric graph.
+   * symmetric graph.
    */
   Vertex_collapsor(SkBlComplex& complex, size_t num_collapses) :
       complex_(complex), num_collapses_(num_collapses) {