doc/: Fix several typos in online help texts

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

doc/config.txt

@@ -3,7 +3,7 @@ Config
 
 Open the configuration submenu. From this submenu, you can select between
 color, layout, notification and general options, and you can also configure
-your keybindings.
+your key bindings.
 
 The color submenu lets you choose the color theme.
 

doc/delete.txt

@@ -4,11 +4,11 @@ Delete
 Delete an element in the TODO or Appointment list.
 
 Depending on which panel is selected when you press the delete key, the
-hilighted item of either the TODO or Appointment list will be removed from this
-list.
+highlighted item of either the TODO or Appointment list will be removed from
+this list.
 
 If the item to be deleted is recurrent, you will be asked if you wish to
-suppress all of the item occurences or just the one you selected.
+suppress all of the item occurrences or just the one you selected.
 
 If the general option 'confirm_delete' is set to 'YES', then you will be asked
 for confirmation before deleting the selected event. Do not forget to save the

doc/edit.txt

@@ -15,9 +15,9 @@ Notes
 -----
 
 * If you choose to edit the item repetition properties, you will be asked to
-  re-enter all of the repetition characteristics (repetition type, frequence,
+  re-enter all of the repetition characteristics (repetition type, frequency,
   and ending date). Moreover, the previous data concerning the deleted
-  occurences will be lost.
+  occurrences will be lost.
 
 * Do not forget to save the calendar data to retrieve the modified properties
   next time you launch Calcurse.

doc/general.txt

@@ -1,8 +1,8 @@
-Generic keybindings
-===================
+Generic key bindings
+====================
 
-Some of the keybindings apply whatever panel is selected. They are called
-generic keybinding.
+Some of the key bindings apply whatever panel is selected. They are called
+generic key binding.
 
 Here is the list of all the generic key bindings, together with their
 corresponding action:

doc/import.txt

@@ -9,11 +9,11 @@ end of the import process, and if the general option 'system_dialogs' is set to
 
 This report contains the total number of lines read, the number of
 appointments, events and todo items which were successfully imported, together
-with the number of items for which problems occured and that were skipped, if
+with the number of items for which problems occurred and that were skipped, if
 any.
 
 If one or more items could not be imported, one has the possibility to read the
-import process report in order to identify which problems occured.
+import process report in order to identify which problems occurred.
 
 In this report is shown one item per line, with the line in the input stream at
 which this item begins, together with the description of why the item could not

doc/other.txt

@@ -5,7 +5,7 @@ Switch between status bar help pages.
 
 Because the terminal screen is too narrow to display all of the available
 commands, you need to press 'o' to see the next set of commands together with
-their keybindings.
+their key bindings.
 
 Once the last status bar page is reached, pressing 'o' another time leads you
 back to the first page.

doc/repeat.txt

@@ -11,12 +11,12 @@ you will be able to specify the repetition characteristics:
                  yearly repetition by pressing 'D', 'W', 'M' or 'Y'
                  respectively.
 
-  o   frequence: this indicates how often the item shall be repeated.
+  o   frequency: this indicates how often the item shall be repeated.
                  For example, if you want to remember an anniversary,
-                 choose a 'yearly' repetition with a frequence of '1',
+                 choose a 'yearly' repetition with a frequency of '1',
                  which means it must be repeated every year. Another
                  example: if you go to the restaurant every two days,
-                 choose a 'daily' repetition with a frequence of '2'.
+                 choose a 'daily' repetition with a frequency of '2'.
 
   o ending date: this specifies when to stop repeating the selected
                  event or appointment. To indicate an endless 
@@ -30,5 +30,5 @@ Notes
   easily recognizable from non-repeated ones.
 
 * The 'Repeat' and 'Delete' command can be mixed to create complicated
-  configurations, as it is possible to delete only one occurence of a repeated
+  configurations, as it is possible to delete only one occurrence of a repeated
   item.

doc/save.txt

@@ -3,7 +3,7 @@ Save
 
 Save calcurse data.
 
-Data are splitted into four different files which contain :
+Data are split into four different files which contain :
 
          / ~/.calcurse/conf -> user configuration
         |                      (layout, color, general options)

doc/view.txt

@@ -3,7 +3,7 @@ View
 
 View the item you select in either the Todo or Appointment panel.
 
-This is usefull when an event description is longer than the available space to
+This is useful when an event description is longer than the available space to
 display it. If that is the case, the description will be shortened and its end
 replaced by '...'. To be able to read the entire description, just press 'v'
 and a popup window will appear, containing the whole event.