Update compilation_android.md: escape * (#128)

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src/introduction/compilation_android.md

@@ -54,7 +54,7 @@ $ meson --default-library static -Dstatic_runtime=true --prefix=/tmp/android-dir
 
 A bit of explanation about all the options:
 * `--default-library static -Dstatic_runtime=true`: this ensure that libraries
- and binaries are statically compiled, so you do not need to properly set LD_*
+ and binaries are statically compiled, so you do not need to properly set LD_\*
  environment variables in your Android environment to make it find the right
  libraries. Binaries have everything they need inside.
 * `-Dblob=true`: it tells meson to compile just one binary with all the needed