Format spacing & remove empty heading

Signed-off-by: Adarsh <[email protected]>

backends/ebpf/README.md

@@ -280,7 +280,7 @@ state transition | `goto` statement
 `extract` | load/shift/mask data from packet buffer
 
 #### Translating match-action pipelines
-##
+
 P4 Construct | C Translation
 ----------|------------
 table     | 2 eBPF tables: second one used just for the default action
@@ -385,7 +385,7 @@ The C extern could be also allowed to access packet’s payload, but this featur
 
 The custom C extern function should be explicitly declared in the P4 program making use of that extern. For example:
 
-```C
+```c
 /** Declaration of the C extern function. */
 extern bool verify_ipv4_checksum(in IPv4_h iphdr);
 ```

backends/ebpf/psa/README.md

@@ -378,7 +378,7 @@ or member.
 
 Before action execution, following source code will be generated (and some additional comments to it) for table lookup,
 which has implementation `ActionSelector`:
-```c
+``` c
 struct ingress_as_value * as_value = NULL;  // pointer to an action data
 u32 as_action_ref = value->ingress_as_ref;  // value->ingress_as_ref is entry from table (reference)
 u8 as_group_state = 0;                      // which map contains action data

backends/p4tools/modules/testgen/README.md

@@ -115,6 +115,7 @@ P4Testgen supports the use of custom externs to restrict the breadth of possible
 #### Restricted Tests
 `testgen_assume(expr)` will add `expr` as a necessary path constraints to all subsequent execution. For example, for the following snippet
 ``` P4
+
 state parse_ethernet {
     packet.extract(headers.ethernet);
     testgen_assume(headers.ethernet.ether_type == 0x800);
@@ -131,6 +132,7 @@ only inputs which have `0x800` as Ethertype will be generated. This mode is enab
 Conversely, `testgen_assert(expr)` can be used to find violations in a particular P4 program. By default, `testgen_assert` behaves like `testgen_assume`. If the flag `--assertion-mode` is enabled, P4Testgen will only generate tests that will cause `expr` to be false and, hence, violate the assertion.
 For example, for
 ``` P4
+
 state parse_ethernet {
     packet.extract(headers.ethernet);
     transition select(headers.ethernet.ether_type) {