Fix a couple of typos in the manpages

Again, thanks to lintian.

hail.1

@@ -32,7 +32,7 @@ select the node which, when chosen as the primary node, gives the best
 score.
 
 For dual\(hynode allocations (mirrored instances), we chose the best
-pair; this is the only choice where the algoritm is non\(hytrivial
+pair; this is the only choice where the algorithm is non\(hytrivial
 with regard to cluster size.
 
 For node evacuations (\fImulti-evacuate\fR mode), we iterate over all
@@ -52,7 +52,7 @@ tags will be read from the cluster tags, configured as follows:
 - use their suffix as the prefix for exclusion tags
 
 For example, given a cluster tag like \fBhtools:iextags:service\fR,
-all instance tags of the form \fBservice:X\fR will be confidered as
+all instance tags of the form \fBservice:X\fR will be considered as
 exclusion tags, meaning that (e.g.) two instances which both have a
 tag \fBservice:foo\fR will not be placed on the same primary node.
 

hbal.1

@@ -256,7 +256,7 @@ It is possible to customise the listed information by passing a
 comma\(hyseparated list of field names to this option (the field list
 is currently undocumented), or to extend the default field list by
 prefixing the additional field list with a plus sign. By default, the
-node list will contain these informations:
+node list will contain the following information:
 .RS
 .TP
 .B F

hspace.1

@@ -164,7 +164,7 @@ example, the cluster might still have 100GiB disk free, but with no
 memory left for instances, we cannot allocate another instance, so in
 effect the disk space is unallocable. Note that the CPUs here
 represent instance virtual CPUs, and in case the \fI--max-cpu\fR
-option hasn't been specified this will be -1.
+option hasn't been specified this will be \-1.
 
 .TP
 .I ALLOC_USAGE
@@ -247,7 +247,7 @@ It is possible to customise the listed information by passing a
 comma\(hyseparated list of field names to this option (the field list
 is currently undocumented), or to extend the default field list by
 prefixing the additional field list with a plus sign. By default, the
-node list will contain these informations:
+node list will contain the following information:
 .RS
 .TP
 .B F