Update Mon (mnw) autonym (#325)

Downstream bug: https://phabricator.wikimedia.org/T352776

Co-authored-by: Niklas Laxström <niklas.laxstrom@gmail.com>

data/langdb.yaml

@@ -470,7 +470,7 @@ languages:
   mnc: [Mong, [AS], ᠮᠠᠨᠵᡠ ᡤᡳᠰᡠᠨ]
   mni: [Mtei, [AS], ꯃꯤꯇꯩ ꯂꯣꯟ]
   mni-beng: [Beng, [AS], মেইতেই লোন্]
-  mnw: [Mymr, [AS], ဘာသာ မန်]
+  mnw: [Mymr, [AS], ဘာသာမန်]
   mo: [Cyrl, [EU], молдовеняскэ]
   moe: [Latn, [AM], innu-aimun]
   mos: [Latn, [AF], moore]

data/language-data.json

@@ -2933,7 +2933,7 @@
             [
                 "AS"
             ],
-            "ဘာသာ မန်"
+            "ဘာသာမန်"
         ],
         "mo": [
             "Cyrl",