Fix documentation syntax and typo

Signed-off-by: Allan McRae <allan@archlinux.org>

lib/libalpm/db.c

@@ -330,7 +330,7 @@ alpm_list_t SYMEXPORT *alpm_db_search(pmdb_t *db, const alpm_list_t* needles)
 	return(_alpm_db_search(db, needles));
 }
 
-/* Set install reason for a package in db
+/** Set install reason for a package in db
  * @param db pointer to the package database
  * @param name the name of the package
  * @param reason the new install reason

lib/libalpm/package.c

@@ -100,7 +100,7 @@ int SYMEXPORT alpm_pkg_checkmd5sum(pmpkg_t *pkg)
 
 /* Default package accessor functions. These will get overridden by any
  * backend logic that needs lazy access, such as the local database through
- * a lazy-laod cache. However, the defaults will work just fine for fully-
+ * a lazy-load cache. However, the defaults will work just fine for fully-
  * populated package structures. */
 const char *_pkg_get_filename(pmpkg_t *pkg)    { return pkg->filename; }
 const char *_pkg_get_name(pmpkg_t *pkg)        { return pkg->name; }