doc: fix internal references

doc/doxygen/chapters/api/data_interfaces.doxy

@@ -313,7 +313,7 @@ starpu_block_data_register(&block_handle, STARPU_MAIN_RAM, (uintptr_t)block, nx,
 \ingroup API_Data_Interfaces
 Register into the \p handle that to store data on node \p node it should use the
 buffer located at \p ptr, or device handle \p dev_handle and offset \p offset
-(for OpenCL, notably), with \p ldy elements between rows and \ldz elements between z planes.
+(for OpenCL, notably), with \p ldy elements between rows and \p ldz elements between z planes.
 
 \fn void starpu_bcsr_data_register(starpu_data_handle_t *handle, unsigned home_node, uint32_t nnz, uint32_t nrow, uintptr_t nzval, uint32_t *colind, uint32_t *rowptr, uint32_t firstentry, uint32_t r, uint32_t c, size_t elemsize)
 \ingroup API_Data_Interfaces

doc/doxygen/chapters/api/insert_task.doxy

@@ -93,7 +93,7 @@ this macro is used when calling starpu_task_insert(), and must be followed by a
 \def STARPU_TAG_ONLY
 \ingroup API_Insert_Task
 this macro is used when calling starpu_task_insert(), and must be followed by a tag.
-It sets ::tag_id, but leaves ::use_tag as 0.
+It sets starpu_task::tag_id, but leaves starpu_task::use_tag as 0.
 
 \def STARPU_FLOPS
 \ingroup API_Insert_Task