Fix typos in "Acceleration Structures" chapter (#2580)

Author: Rageking8

chapters/accelstructures.adoc

@@ -207,7 +207,7 @@ operation transfers the reference in the acceleration structure to the new
 micromap.
 
 If the original acceleration structure was built using opacity micromaps and
-neither opacity micromap update flag is set the application must: provide
+neither opacity micromap update flag is set, the application must: provide
 the original micromap to the update operation.
 
 endif::VK_EXT_opacity_micromap[]
@@ -2455,7 +2455,7 @@ include::{generated}/api/protos/vkCmdCopyAccelerationStructureToMemoryKHR.adoc[]
 
   * pname:commandBuffer is the command buffer into which the command will be
     recorded.
-  * pname:pInfo is an a pointer to a
+  * pname:pInfo is a pointer to a
     slink:VkCopyAccelerationStructureToMemoryInfoKHR structure defining the
     copy operation.
 
@@ -2476,7 +2476,7 @@ ename:VK_PIPELINE_STAGE_2_ACCELERATION_STRUCTURE_COPY_BIT_KHR
 <<synchronization-pipeline-stages, pipeline stage>> or the
 endif::VK_KHR_synchronization2[]
 ename:VK_PIPELINE_STAGE_ACCELERATION_STRUCTURE_BUILD_BIT_KHR
-<<synchronization-pipeline-stages, pipeline stage>>, and an and an access
+<<synchronization-pipeline-stages, pipeline stage>>, and an access
 type of ename:VK_ACCESS_TRANSFER_WRITE_BIT.
 
 This command produces the same results as