Format Compiler and linker flag table [skip ci]
diff --git a/docs/markdown/Reference-tables.md b/docs/markdown/Reference-tables.md
index 0de1893..fa913f5 100644
--- a/docs/markdown/Reference-tables.md
+++ b/docs/markdown/Reference-tables.md
@@ -117,6 +117,8 @@
These environment variables will be used to modify the compiler and
linker flags.
+| Name | Comment |
+| ----- | ------- |
| CFLAGS | Flags for the C compiler |
| CXXFLAGS | Flags for the C++ compiler |
| OBJCFLAGS | Flags for the Objective C compiler |