[utest] Corrected two typos and modified some comments

Tests/NumLib/FeTestData/TestFeHEX20.h

@@ -32,7 +32,7 @@ public:
     static const unsigned global_dim = MeshElementType::dimension;
     const double perturbation = 0.2;
 
-    /// create a mesh element
+    /// create a 20 node hexahedral element with curved edges
     MeshElementType* createMeshElement()
     {
         auto** nodes = new MeshLib::Node*[e_nnodes];
@@ -54,7 +54,7 @@ public:
         nodes[11] = new MeshLib::Node(perturbation, 0.5, 0.0);
 
         // mid-edge nodes on top
-        nodes[12] = new MeshLib::Node(0.5,  perturbation, 1.0);
+        nodes[12] = new MeshLib::Node(0.5, perturbation, 1.0);
         nodes[13] = new MeshLib::Node(1.0 + perturbation, 0.5, 1.0);
         nodes[14] = new MeshLib::Node(0.5, 1.0 + perturbation, 1.0);
         nodes[15] = new MeshLib::Node(perturbation, 0.5, 1.0);

Tests/NumLib/FeTestData/TestFePRISM15.h

@@ -32,7 +32,7 @@ public:
     static const unsigned global_dim = MeshElementType::dimension;
     const double perturbation = 0.2;
 
-    /// create a mesh element
+    /// create a 15 node prism element with curved edges
     MeshElementType* createMeshElement()
     {
         auto** nodes = new MeshLib::Node*[e_nnodes];

Tests/NumLib/FeTestData/TestFePYRA13.h

@@ -33,7 +33,7 @@ public:
     static const unsigned global_dim = MeshElementType::dimension;
     const double perturbation = 0.2;
 
-    /// create a mesh element
+    /// create a 13 node pyramid element with curved edges
     MeshElementType* createMeshElement()
     {
         auto** nodes = new MeshLib::Node*[e_nnodes];

Tests/NumLib/FeTestData/TestFeQUAD8.h

@@ -15,7 +15,7 @@
 
 namespace FeTestData
 {
-/** Test the eight node iso parameter quadrilateral element
+/** Test the eight node iso-parametric quadrilateral element
  * Assuming that the edge points are translated outside of the square shape
  * element with a distance of b (perturbation) to their owner edges, we can
  * obtain the the area of the changed element as

Tests/NumLib/FeTestData/TestFeQUAD9.h

@@ -17,7 +17,7 @@ namespace FeTestData
 {
 class TestFeQUAD9
 {
-    /** Test the nine node iso parameter quadrilateral element
+    /** Test the nine node iso-parametric quadrilateral element
      * Assuming that the edge points are translated outside of the square shape
      * element with a distance of b (perturbation) to their owner edges, we can
      * obtain the the area of the changed element as

Tests/NumLib/FeTestData/TestFeTRI6.h

@@ -16,7 +16,7 @@
 
 namespace FeTestData
 {
-/** Test the six node iso parameter triangle element
+/** Test the six node iso-parametric triangle element
  * Assuming that the edge points are translated outside of the square shape
  * element with a distance of b (perturbation) to their owner edges, we can
  * obtain the the area of the changed element as

Tests/NumLib/TestGradShapeFunction.cpp

@@ -101,7 +101,7 @@ using TestTypes =
 }
 
 template <class T>
-class GradShapeFucntionTest : public ::testing::Test, public T::TestFeType
+class GradShapeFunctionTest : public ::testing::Test, public T::TestFeType
 {
 public:
     using ShapeMatrixTypes = typename T::ShapeMatrixTypes;
@@ -126,7 +126,7 @@ public:
         MeshElementType>::IntegrationMethod;
 
 public:
-    GradShapeFucntionTest()
+    GradShapeFunctionTest()
         : integration_method(3),
           element_volume(this->getVolume()),
           mesh_element(this->createMeshElement())
@@ -138,7 +138,7 @@ public:
                 vec_nodes.push_back(e->getNode(i));
     }
 
-    ~GradShapeFucntionTest() override
+    ~GradShapeFunctionTest() override
     {
         for (auto itr = vec_nodes.begin(); itr != vec_nodes.end(); ++itr)
             delete *itr;
@@ -158,20 +158,20 @@ public:
 };  // NumLibFemIsoTest
 
 template <class T>
-const unsigned GradShapeFucntionTest<T>::dim;
+const unsigned GradShapeFunctionTest<T>::dim;
 
 template <class T>
-const unsigned GradShapeFucntionTest<T>::e_nnodes;
+const unsigned GradShapeFunctionTest<T>::e_nnodes;
 
 template <class T>
-const unsigned GradShapeFucntionTest<T>::n_sample_pt_order2;
+const unsigned GradShapeFunctionTest<T>::n_sample_pt_order2;
 
 template <class T>
-const unsigned GradShapeFucntionTest<T>::n_sample_pt_order3;
+const unsigned GradShapeFunctionTest<T>::n_sample_pt_order3;
 
-TYPED_TEST_CASE(GradShapeFucntionTest, TestTypes);
+TYPED_TEST_CASE(GradShapeFunctionTest, TestTypes);
 
-TYPED_TEST(GradShapeFucntionTest,
+TYPED_TEST(GradShapeFunctionTest,
            CheckGradShapeFunctionByComputingElementVolume)
 {
     // Refer to typedefs in the fixture