update old dip links from wiki to github

Author: dkorpel

.htaccess

@@ -118,12 +118,12 @@ Redirect 301 /dips/16 https://wiki.dlang.org/DIP16
 Redirect 301 /dips/17 https://wiki.dlang.org/DIP17
 Redirect 301 /dips/18 https://wiki.dlang.org/DIP18
 Redirect 301 /dips/19 https://wiki.dlang.org/DIP19
-Redirect 301 /dips/20 https://wiki.dlang.org/DIP20
+Redirect 301 /dips/20 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP20.md
 Redirect 301 /dips/21 https://wiki.dlang.org/DIP21
-Redirect 301 /dips/22 https://wiki.dlang.org/DIP22
+Redirect 301 /dips/22 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP22.md
 Redirect 301 /dips/23 https://wiki.dlang.org/DIP23
 Redirect 301 /dips/24 https://wiki.dlang.org/DIP24
-Redirect 301 /dips/25 https://wiki.dlang.org/DIP25
+Redirect 301 /dips/25 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP25.md
 Redirect 301 /dips/26 https://wiki.dlang.org/DIP26
 Redirect 301 /dips/27 https://wiki.dlang.org/DIP27
 Redirect 301 /dips/28 https://wiki.dlang.org/DIP28
@@ -135,15 +135,15 @@ Redirect 301 /dips/33 https://wiki.dlang.org/DIP33
 Redirect 301 /dips/34 https://wiki.dlang.org/DIP34
 Redirect 301 /dips/35 https://wiki.dlang.org/DIP35
 Redirect 301 /dips/36 https://wiki.dlang.org/DIP36
-Redirect 301 /dips/37 https://wiki.dlang.org/DIP37
+Redirect 301 /dips/37 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP37.md
 Redirect 301 /dips/38 https://wiki.dlang.org/DIP38
 Redirect 301 /dips/39 https://wiki.dlang.org/DIP39
 Redirect 301 /dips/40 https://wiki.dlang.org/DIP40
 Redirect 301 /dips/41 https://wiki.dlang.org/DIP41
-Redirect 301 /dips/42 https://wiki.dlang.org/DIP42
-Redirect 301 /dips/43 https://wiki.dlang.org/DIP43
+Redirect 301 /dips/42 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP42.md
+Redirect 301 /dips/43 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP43.md
 Redirect 301 /dips/44 https://wiki.dlang.org/DIP44
-Redirect 301 /dips/45 https://wiki.dlang.org/DIP45
+Redirect 301 /dips/45 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP45.md
 Redirect 301 /dips/46 https://wiki.dlang.org/DIP46
 Redirect 301 /dips/47 https://wiki.dlang.org/DIP47
 Redirect 301 /dips/48 https://wiki.dlang.org/DIP48
@@ -154,12 +154,12 @@ Redirect 301 /dips/52 https://wiki.dlang.org/DIP52
 Redirect 301 /dips/53 https://wiki.dlang.org/DIP53
 Redirect 301 /dips/54 https://wiki.dlang.org/DIP54
 Redirect 301 /dips/55 https://wiki.dlang.org/DIP55
-Redirect 301 /dips/56 https://wiki.dlang.org/DIP56
+Redirect 301 /dips/56 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP56.md
 Redirect 301 /dips/57 https://wiki.dlang.org/DIP57
 Redirect 301 /dips/58 https://wiki.dlang.org/DIP58
 Redirect 301 /dips/59 https://wiki.dlang.org/DIP59
-Redirect 301 /dips/60 https://wiki.dlang.org/DIP60
-Redirect 301 /dips/61 https://wiki.dlang.org/DIP61
+Redirect 301 /dips/60 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP60.md
+Redirect 301 /dips/61 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP61.md
 Redirect 301 /dips/62 https://wiki.dlang.org/DIP62
 Redirect 301 /dips/63 https://wiki.dlang.org/DIP63
 Redirect 301 /dips/64 https://wiki.dlang.org/DIP64
@@ -173,7 +173,7 @@ Redirect 301 /dips/71 https://wiki.dlang.org/DIP71
 Redirect 301 /dips/72 https://wiki.dlang.org/DIP72
 Redirect 301 /dips/73 https://wiki.dlang.org/DIP73
 Redirect 301 /dips/74 https://wiki.dlang.org/DIP74
-Redirect 301 /dips/75 https://wiki.dlang.org/DIP75
+Redirect 301 /dips/75 https://github.com/dlang/DIPs/blob/master/DIPs/archive/DIP75.md
 Redirect 301 /dips/76 https://wiki.dlang.org/DIP76
 Redirect 301 /dips/77 https://wiki.dlang.org/DIP77
 Redirect 301 /dips/78 https://wiki.dlang.org/DIP78