Fixing rules description

Author: mbaluda

c/misra/src/rules/RULE-17-5/ArrayFunctionArgumentNumberOfElements.ql

@@ -2,7 +2,7 @@
  * @id c/misra/array-function-argument-number-of-elements
  * @name RULE-17-5: An array founction argument shall have an appropriate number of elements
  * @description The function argument corresponding to an array parameter shall have an appropriate
- *              number of elements
+ *              number of elements.
  * @kind problem
  * @precision high
  * @problem.severity error

c/misra/src/rules/RULE-17-7/ValueReturnedByAFunctionNotUsed.ql

@@ -2,7 +2,7 @@
  * @id c/misra/value-returned-by-a-function-not-used
  * @name RULE-17-7: Return values should be used or cast to void
  * @description The value returned by a function having non-void return type shall be used or cast
- *              to void
+ *              to void.
  * @kind problem
  * @precision very-high
  * @problem.severity error