fixed buck converter schematics and footprint

Signed-off-by: Peter Siegmund <mars3142@users.noreply.github.com>

aliexpress.kicad_sym

@@ -66,7 +66,7 @@
 			(pin passive line
 				(at -7.62 3.81 0)
 				(length 2.54)
-				(name "IN+"
+				(name "IN-"
 					(effects
 						(font
 							(size 1.27 1.27)
@@ -84,7 +84,7 @@
 			(pin passive line
 				(at -7.62 -3.81 0)
 				(length 2.54)
-				(name "IN-"
+				(name "IN+"
 					(effects
 						(font
 							(size 1.27 1.27)
@@ -102,7 +102,7 @@
 			(pin passive line
 				(at 8.89 3.81 180)
 				(length 2.54)
-				(name "OUT+"
+				(name "OUT-"
 					(effects
 						(font
 							(size 1.27 1.27)
@@ -120,7 +120,7 @@
 			(pin passive line
 				(at 8.89 -3.81 180)
 				(length 2.54)
-				(name "OUT-"
+				(name "OUT+"
 					(effects
 						(font
 							(size 1.27 1.27)