Big font fixes

Better look 'm' letter
Replace 'u' letter to 'µ'

numfont20x22.c

@@ -515,12 +515,12 @@ const uint16_t numfont16x22[] = {
         0b0000000000000000,
         0b0000000000000000,
         0b0000000000000000,
-        0b1111001100110000,
-        0b1111011111111100,
-        0b1111111111111110,
-        0b1111111111111110,
-        0b1111111111011111,
-        0b1111101111001111,
+        0b1110111000011100,
+        0b1111111100111110,
+        0b1111111111111111,
+        0b1111111111111111,
+        0b1111001111001111,
+        0b1111001111001111,
         0b1111001111001111,
         0b1111001111001111,
         0b1111001111001111,
@@ -536,22 +536,22 @@ const uint16_t numfont16x22[] = {
         0b0000000000000000,
         0b0000000000000000,
         0b0000000000000000,
-        0b0000000000000000,
-        0b0000000000000000,
-        0b1111000000001111,
-        0b1111000000001111,
-        0b1111000000001111,
-        0b1111000000001111,
-        0b1111000000001111,
-        0b1111000000001111,
-        0b1111000000001111,
-        0b1111000000001111,
-        0b1111000000011111,
-        0b1111100000111111,
-        0b1111110001111111,
-        0b0111111111111111,
-        0b0011111111101111,
-        0b0001111111001111,
+        0b1111000000011110,
+        0b1111000000011110,
+        0b1111000000011110,
+        0b1111000000011110,
+        0b1111000000011110,
+        0b1111000000011110,
+        0b1111000000011110,
+        0b1111000000011110,
+        0b1111100000111110,
+        0b1111110001111110,
+        0b1111111111111110,
+        0b1111111111111111,
+        0b1111011111001111,
+        0b1111001110000111,
+        0b1111000000000000,
+        0b1111000000000000,
 
         0b0000000000000000, // n
         0b0000000000000000,