Fix incorrect use of "# introduced=" tag.

The tool that creates a stub from a map file (build/soong/cc/symbolfile)
requires that the introduced flag be in the form of "# introduced=31",
and doesn't recognize "#introduced = 31".

Bug: 177365934
Test: m
Change-Id: I38ccd39c06f05affd66b47f4e4182a3882ff7661
diff --git a/media/ndk/libmediandk.map.txt b/media/ndk/libmediandk.map.txt
index 237b66e..2b389fe 100644
--- a/media/ndk/libmediandk.map.txt
+++ b/media/ndk/libmediandk.map.txt
@@ -167,11 +167,11 @@
     AMediaCodecCryptoInfo_setPattern; # introduced=24
     AMediaCodec_configure;
     AMediaCodec_createCodecByName;
-    AMediaCodec_createCodecByNameForClient; # apex #introduced = 31
+    AMediaCodec_createCodecByNameForClient; # apex # introduced=31
     AMediaCodec_createDecoderByType;
-    AMediaCodec_createDecoderByTypeForClient; # apex #introduced = 31
+    AMediaCodec_createDecoderByTypeForClient; # apex # introduced=31
     AMediaCodec_createEncoderByType;
-    AMediaCodec_createEncoderByTypeForClient; # apex #introduced = 31
+    AMediaCodec_createEncoderByTypeForClient; # apex # introduced=31
     AMediaCodec_delete;
     AMediaCodec_dequeueInputBuffer;
     AMediaCodec_dequeueOutputBuffer;