Cleanup grammar on documentation for tensor and backend (#1825)

doc/sphinx/source/ops/index.rst

 .. ops/index.rst
 
-Core Ops
-========
+About Core Ops
+==============
 
 An ``Op``'s primary role is to function as a node in a directed acyclic graph 
 dependency computation graph.  
@@ -40,7 +40,7 @@ that must be performed are:
 
 
 Alphabetical list of Core ``ops``
-----------------------------------
+=================================
 
 Not currently a comprehensive list.  
 
@@ -163,5 +163,3 @@ Not currently a comprehensive list.
    sqrt.rst
    tan.rst
    tanh.rst
-
-   

src/ngraph/runtime/backend.hpp

@@ -54,7 +54,7 @@ public:
     /// \brief Create a tensor specific to this backend
     /// \param element_type The type of the tensor element
     /// \param shape The shape of the tensor
-    /// \returns shared_ptr to a new backend specific tensor
+    /// \returns shared_ptr to a new backend-specific tensor
     virtual std::shared_ptr<ngraph::runtime::Tensor>
         create_tensor(const ngraph::element::Type& element_type, const Shape& shape) = 0;
 
@@ -64,7 +64,7 @@ public:
     /// \param memory_pointer A pointer to a buffer used for this tensor. The size of the buffer
     ///     must be sufficient to contain the tensor. The lifetime of the buffer is the
     ///     responsibility of the caller.
-    /// \returns shared_ptr to a new backend specific tensor
+    /// \returns shared_ptr to a new backend-specific tensor
     virtual std::shared_ptr<ngraph::runtime::Tensor> create_tensor(
         const ngraph::element::Type& element_type, const Shape& shape, void* memory_pointer) = 0;
 
@@ -107,8 +107,8 @@ public:
     /// \param func The function to execute
     virtual void remove_compiled_function(std::shared_ptr<Function> func);
 
-    /// \brief Enable the collection of per op performance information on a specified Function.
-    ///     Data is collection via the `get_performance_data` method.
+    /// \brief Enable the collection of per-op performance information on a specified Function.
+    ///     Data collection is via the `get_performance_data` method.
     /// \param func The function to collect perfomance data on.
     /// \param enable Set to true to enable or false to disable data collection
     virtual void enable_performance_data(std::shared_ptr<Function> func, bool enable) {}

src/ngraph/runtime/tensor.hpp

@@ -78,12 +78,12 @@ namespace ngraph
             /// \param layout Layout to set
             void set_tensor_layout(const std::shared_ptr<descriptor::layout::TensorLayout>& layout);
 
-            /// \brief Get the stale value of the tensor. A tensor is stale if it's data is
+            /// \brief Get the stale value of the tensor. A tensor is stale if its data is
             /// changed.
             /// \return true if there is new data in this tensor
             bool get_stale() const;
 
-            /// \brief Set the stale value of the tensor. A tensor is stale if it's data is
+            /// \brief Set the stale value of the tensor. A tensor is stale if its data is
             /// changed.
             void set_stale(bool val);