Fix incorrect @param names in doc comments

Two Doxygen comments referenced parameter names that don't match their
signatures:

- odb dbGDSReader::processElement documented '@param str' instead of
  'structure'.
- drt FlexPA::createMultipleAccessPoints documented '@param rec' instead
  of 'rect'.

Signed-off-by: eeshsaxena <eeshsaxena@gmail.com>

Author: eeshsaxena

src/drt/src/pa/FlexPA.h

@@ -451,7 +451,7 @@ class FlexPA
    * @param inst_term the instance terminal
    * @param aps Vector contaning the access points
    * @param apset Set containing access points data (auxilary)
-   * @param rec Rect limiting where the point can be
+   * @param rect Rect limiting where the point can be
    * @param layer_num access point layer
    * @param x_coords map of access point x coords
    * @param y_coords map of access point y coords

src/odb/include/odb/gdsin.h

@@ -96,7 +96,7 @@ class GDSReader
   /**
    * Parses a GDS Element from the GDS file
    *
-   * @param str The GDS Structure to add the GDS Element to
+   * @param structure The GDS Structure to add the GDS Element to
    */
   bool processElement(dbGDSStructure* structure);