evas: fix typo in eo file

Summary:
Change the first letter of the sentence from lowercase to uppercase,
and fix typo "top be" to "to be"

Reviewers: cedric, jpeg, stefan_schmidt, myoungwoon, Jaehyun_Cho, conr2d

Reviewed By: cedric

Differential Revision: https://phab.enlightenment.org/D5398

Signed-off-by: Cedric Bail <cedric@osg.samsung.com>

src/lib/evas/canvas/evas_box.eo

@@ -521,7 +521,7 @@ class Evas.Box (Efl.Canvas.Group)
          legacy: null;
          return: ptr(Evas_Object_Box_Option); [[Box option]]
          params {
-            @in child: Efl.Canvas.Object; [[Object top be inserted]]
+            @in child: Efl.Canvas.Object; [[Object to be inserted]]
             @in reference: const(Efl.Canvas.Object); [[Reference where the object will be inserted]]
          }
       }

src/lib/evas/canvas/evas_grid.eo

@@ -68,7 +68,7 @@ class Evas.Grid (Efl.Canvas.Group)
            @since 1.1]]
 
          params {
-            @in clear: bool; [[if $true, it will delete just removed children.]]
+            @in clear: bool; [[If $true, it will delete just removed children.]]
          }
       }
       iterator_new @const {

src/lib/evas/canvas/evas_table.eo

@@ -110,7 +110,7 @@ class Evas.Table (Efl.Canvas.Group)
               accounted proportionally.]]
          }
          values {
-            cols: int; [[Columns in Table]]
+            cols: int; [[Columns in table]]
             rows: int; [[Rows in table]]
          }
       }