Holy -> Arcane change, and various typo fixes, in the new manual.

doc/manual/manual.txt

@@ -15,7 +15,7 @@ well on different terrains against all manner of opposition.
 Fight to regain the throne of Wesnoth, of which you are the legitimate
 heir, or use your dread power over the Undead to dominate the land of
 mortals, or lead your glorious Orcish tribe to victory against the humans
-who dared despoil your lands… Wesnoth has many different sagas waiting
+who dared despoil your lands. Wesnoth has many different sagas waiting
 to be played out. You can create your own custom units, and write your
 own scenarios – or even full-blown campaigns. You can also challenge
 your friends – or strangers – and fight in epic 'multi-player'
@@ -199,7 +199,7 @@ take about the same time to play as games played over the Internet.
 Human vs AI
 +++++++++++
 
-You can also play any of the campaign scenarios against AI opponents
+You can also play any of the multiplayer scenarios against AI opponents
 rather than human players. This can be a good way to become familiar
 with the various maps that are used for multiplayer games before playing
 against real opponents. It can also be used as a simple way to explore
@@ -791,8 +791,8 @@ Attack types
    ice bolt.
  - *Fire*: Weapons using fire to roast the foe like a chicken. Example:
    A drake's fire breath.
- - *Holy*: Magical weapons blessed by a deity. Example: A white mage's
-   magic attack.
+ - *Arcane*: An attack that dispells the magic animating zombies,
+   specters, and other undead creatures. Example: A white mage's magic attack.
 
 Resistance
 ^^^^^^^^^^
@@ -858,7 +858,7 @@ Some other hints about healing:
  - Healers do not heal enemy units.
  - Healers cannot heal themselves, but see next point.
  - Use your healers in pairs, so they can heal each other if needed.
- - Healers can heal the same unit and speed up healing.
+ - Multiple healers can heal the same unit and speed up healing.
  - Trolls and Woses cannot regenerate other units.
  - Trolls and Woses cure themselves from poison as a village does.
  - Trolls and Woses can be healed by healers and a village.
@@ -949,7 +949,7 @@ these weak points. These are the most likely to be killed, so use units
 with no or few experience points (XP) for this purpose.
 
 Lining your troops up also prevents the enemy from surrounding any one
-of them. For ZOC reasons, a unit with one enemy behind and in front
+of them. For ZOC reasons, a unit with one enemy behind it and one in front
 is trapped.
 
 Rotate your troops