n>=2 (trac https://trac.osgeo.org/grass/ticket/341; merge from devbr6)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@36157 15284696-431f-4ddb-bdfa-cd5b030d7da7

imagery/i.pca/i.pca.html

@@ -2,8 +2,8 @@
 
 
 <EM>i.pca</EM> is an image processing program based on the
-algorithm provided by Vali (1990), that processes n (2
-&gt;= n) input raster map layers and produces n output
+algorithm provided by Vali (1990), that processes n
+(n&nbsp;&gt;=&nbsp;2) input raster map layers and produces n output
 raster map layers containing the principal components of
 the input data in decreasing order of variance
 ("contrast").  The output raster map layers are assigned