[evolution-data-server] Correct few typos in the developer comments

[Milan Crha <mcrha src gnome org>]

commit 7f485b734915b2ba9d7ad77a963f123dd7b1d6c1
Author: Milan Crha <mcrha redhat com>
Date:   Wed Feb 10 17:28:27 2021 +0100

    Correct few typos in the developer comments

 src/calendar/libecal/e-cal-component.c   | 2 +-
 src/calendar/libecal/e-timezone-cache.c  | 2 +-
 src/libedataserver/e-source-selectable.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/calendar/libecal/e-cal-component.c b/src/calendar/libecal/e-cal-component.c
index dafefb3bb..eb5257baa 100644
--- a/src/calendar/libecal/e-cal-component.c
+++ b/src/calendar/libecal/e-cal-component.c
@@ -3910,7 +3910,7 @@ dup_alarm_uid_from_component (ICalComponent *valarm)
  * @alarm: (transfer none): an alarm, as an #ECalComponentAlarm
  *
  * Adds an alarm subcomponent to a calendar component.  You should have created
- * the @alarm by using e_cal_component_alarm_new(); it is invalid to use a
+ * the @alarm by using e_cal_component_alarm_new(); it is invalid to use an
  * #ECalComponentAlarm structure that came from e_cal_component_get_alarm().  After
  * adding the alarm, the @alarm structure is no longer valid because the
  * internal structures may change and you should get rid of it by using
diff --git a/src/calendar/libecal/e-timezone-cache.c b/src/calendar/libecal/e-timezone-cache.c
index e0fb39439..a706944b3 100644
--- a/src/calendar/libecal/e-timezone-cache.c
+++ b/src/calendar/libecal/e-timezone-cache.c
@@ -58,7 +58,7 @@ e_timezone_cache_default_init (ETimezoneCacheInterface *iface)
  * @cache: an #ETimezoneCache
  * @zone: an #ICalTimezone
  *
- * Adds a copy of @zone to @cache and emits a
+ * Adds a copy of @zone to @cache and emits an
  * #ETimezoneCache::timezone-added signal.  The @cache will use the TZID
  * string returned by i_cal_timezone_get_tzid() as the lookup key, which can
  * be passed to e_timezone_cache_get_timezone() to obtain @zone again.
diff --git a/src/libedataserver/e-source-selectable.c b/src/libedataserver/e-source-selectable.c
index ddff58a91..25f903f93 100644
--- a/src/libedataserver/e-source-selectable.c
+++ b/src/libedataserver/e-source-selectable.c
@@ -339,7 +339,7 @@ e_source_selectable_get_order (ESourceSelectable *extension)
 /**
  * e_source_selectable_set_order:
  * @extension: an #ESourceSelectable
- * @selected: selected state
+ * @order: the sorting order
  *
  * Sets the sorting order for the #ESource to which @extension belongs.
  *