residuals -> correlation coefficient

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@48605 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.regression.line/r.regression.line.html

@@ -4,7 +4,7 @@
 according to the formula y = a + b*x, where x and y represent raster maps. 
 Optionally saves regression coefficients to an ASCII file. 
 The result includes the following coefficients:
-offset/intercept (a) and gain/slope (b), residuals (R),
+offset/intercept (a) and gain/slope (b), correlation coefficient (R),
 number of elements (N), means (medX, medY), standard deviations
 (sdX, sdY), and the F test for testing the significance of the
 regression model as a whole (F).