Fix short conversion of 1000-1023*iB

floating_humanizer([1000-1024], true) with base 8 returns "2K", whereas it should return
"1.0K" to align with other formats. The conversion is also broken for
all other units(e.g. 1023M is also broken and returns "2G")

src/btop_tools.cpp

@@ -443,7 +443,7 @@ namespace Tools {
 				out = to_string((int)round(stod(out)));
 			}
 			if (out.size() > 3) {
-				out = to_string((int)(out[0] - '0') + 1);
+				out = to_string((int)(out[0] - '0')) + ".0";
 				start++;
 			}
 			out.push_back(units[start][0]);