doc: improve code rendering in table with RTD sphinx theme

Signed-off-by: Xavier Delaruelle <[email protected]>

Author: xdelaruelle

doc/source/_static/rtd_literal_block.css

@@ -5,3 +5,12 @@
     background-color: #1e1e1e;
     color: #ffffff;
 }
+
+/* Render inline literal in table: drop the borderbox, padding and
+ * background */
+.rst-content td tt.literal, .rst-content td code.literal {
+    border: none;
+    padding: unset;
+    background: inherit;
+    font-size: 90%;
+}