only-en formal updates/hunspell

(cherry picked from commit 8c9f104)

Author: eseyffarth

src/common/en/bi.asciidoc

@@ -1,5 +1,5 @@
 // -*- coding: utf-8 -*-
-// IGNORE Aggr Hostgroups backup3
+// IGNORE Aggr Hostgroups backup3 isn't
 // NONASCII
 include::global_attr.adoc[]
 = Business Intelligence (BI)
@@ -365,7 +365,7 @@ This time set the [.guihint]#Aggregation Function# in the third box to [.guihint
 In this function the state of the node is thus derived from the worst state of a service below it.
 In this case, if `NTP Time` goes to {CRIT} the node also goes to {CRIT}.
 
-Of course to make the new, bigger tree visible, you'll once again need to create an aggregation.
+Of course to make the new, bigger tree visible, you will once again need to create an aggregation.
 It is best to simply change the existing aggregation so that from now on the new rule is used:
 
 image::bi_4_rule_infra_3.png[]
@@ -449,7 +449,7 @@ image::bi_5_visualization_context.png[]
 ==== Customizing a display
 
 It starts getting really interesting with the [.guihint]#Layout Designer#, which is opened with icon:icon_aggr[alt="Icon for an aggregation."] at the top, next to the search field.
-First of all, you'll see two new items 
+First of all, you will see two new items 
 -- the [.guihint]#Layout Configuration#, and two new icons at the root -- icon:icon_rotate_left[alt="Icon for left-rotating."] and icon:icon_resize[alt="Icon for resizing."].
 
 In a configuration you can choose between different types of line and can activate the [.guihint]#Node icons#.