memory: minor documentation fixes/enhancements

Fix typos and minor documentation errors in both memory.h and
docs/memory.txt.

Also add missing documentation formatting tags to transaction
functions.

Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Ademar de Souza Reis Jr <areis@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/memory.h b/memory.h
index 53bf261..beae127 100644
--- a/memory.h
+++ b/memory.h
@@ -149,7 +149,7 @@
 /**
  * memory_region_init: Initialize a memory region
  *
- * The region typically acts as a container for other memory regions.  Us
+ * The region typically acts as a container for other memory regions.  Use
  * memory_region_add_subregion() to add subregions.
  *
  * @mr: the #MemoryRegion to be initialized
@@ -162,7 +162,7 @@
 /**
  * memory_region_init_io: Initialize an I/O memory region.
  *
- * Accesses into the region will be cause the callbacks in @ops to be called.
+ * Accesses into the region will cause the callbacks in @ops to be called.
  * if @size is nonzero, subregions will be clipped to @size.
  *
  * @mr: the #MemoryRegion to be initialized.
@@ -180,7 +180,7 @@
 
 /**
  * memory_region_init_ram:  Initialize RAM memory region.  Accesses into the
- *                          region will be modify memory directly.
+ *                          region will modify memory directly.
  *
  * @mr: the #MemoryRegion to be initialized.
  * @dev: a device associated with the region; may be %NULL.
@@ -196,7 +196,7 @@
 
 /**
  * memory_region_init_ram:  Initialize RAM memory region from a user-provided.
- *                          pointer.  Accesses into the region will be modify
+ *                          pointer.  Accesses into the region will modify
  *                          memory directly.
  *
  * @mr: the #MemoryRegion to be initialized.
@@ -250,7 +250,7 @@
                                    uint64_t size);
 
 /**
- * memory_region_destroy: Destroy a memory region and relaim all resources.
+ * memory_region_destroy: Destroy a memory region and reclaim all resources.
  *
  * @mr: the region to be destroyed.  May not currently be a subregion
  *      (see memory_region_add_subregion()) or referenced in an alias
@@ -417,7 +417,7 @@
  *
  * Marks a word in an IO region (initialized with memory_region_init_io())
  * as a trigger for an eventfd event.  The I/O callback will not be called.
- * The caller must be prepared to handle failure (hat is, take the required
+ * The caller must be prepared to handle failure (that is, take the required
  * action if the callback _is_ called).
  *
  * @mr: the memory region being updated.
@@ -435,10 +435,10 @@
                                int fd);
 
 /**
- * memory_region_del_eventfd: Cancel and eventfd.
+ * memory_region_del_eventfd: Cancel an eventfd.
  *
- * Cancels an eventfd trigger request by a previous memory_region_add_eventfd()
- * call.
+ * Cancels an eventfd trigger requested by a previous
+ * memory_region_add_eventfd() call.
  *
  * @mr: the memory region being updated.
  * @addr: the address within @mr that is to be monitored
@@ -454,9 +454,9 @@
                                uint64_t data,
                                int fd);
 /**
- * memory_region_add_subregion: Add a sub-region to a container.
+ * memory_region_add_subregion: Add a subregion to a container.
  *
- * Adds a sub-region at @offset.  The sub-region may not overlap with other
+ * Adds a subregion at @offset.  The subregion may not overlap with other
  * subregions (except for those explicitly marked as overlapping).  A region
  * may only be added once as a subregion (unless removed with
  * memory_region_del_subregion()); use memory_region_init_alias() if you
@@ -471,9 +471,9 @@
                                  target_phys_addr_t offset,
                                  MemoryRegion *subregion);
 /**
- * memory_region_add_subregion: Add a sub-region to a container, with overlap.
+ * memory_region_add_subregion: Add a subregion to a container, with overlap.
  *
- * Adds a sub-region at @offset.  The sub-region may overlap with other
+ * Adds a subregion at @offset.  The subregion may overlap with other
  * subregions.  Conflicts are resolved by having a higher @priority hide a
  * lower @priority. Subregions without priority are taken as @priority 0.
  * A region may only be added once as a subregion (unless removed with
@@ -501,11 +501,17 @@
 void memory_region_del_subregion(MemoryRegion *mr,
                                  MemoryRegion *subregion);
 
-/* Start a transaction; changes will be accumulated and made visible only
- * when the transaction ends.
+/**
+ * memory_region_transaction_begin: Start a transaction.
+ *
+ * During a transaction, changes will be accumulated and made visible
+ * only when the transaction ends (is commited).
  */
 void memory_region_transaction_begin(void);
-/* Commit a transaction and make changes visible to the guest.
+
+/**
+ * memory_region_transaction_commit: Commit a transaction and make changes
+ *                                   visible to the guest.
  */
 void memory_region_transaction_commit(void);