doc: correct orthography, word forms and missing/extraneous words

src/libsystemd-network/lldp-tlv.c

@@ -278,7 +278,7 @@ int tlv_packet_parse_pdu(tlv_packet *m, uint16_t size) {
 
         p = m->pdu;
 
-        /* extract ethernet header */
+        /* extract Ethernet header */
         memcpy(&m->mac, p, ETH_ALEN);
         p += sizeof(struct ether_header);
 

src/libsystemd-network/sd-dhcp-client.c

@@ -1517,7 +1517,7 @@ static int client_receive_message_udp(sd_event_source *s, int fd,
                 expected_hlen = ETH_ALEN;
                 expected_chaddr = (const struct ether_addr *) &client->mac_addr;
         } else {
-               /* Non-ethernet links expect zero chaddr */
+               /* Non-Ethernet links expect zero chaddr */
                expected_hlen = 0;
                expected_chaddr = &zero_mac;
         }

src/libsystemd-network/test-lldp.c

@@ -54,7 +54,7 @@ static int lldp_build_tlv_packet(tlv_packet **ret) {
                 .ether_type = htons(ETHERTYPE_LLDP),
         };
 
-        /* Append ethernet header */
+        /* Append Ethernet header */
         memcpy(&ether.ether_dhost, lldp_dst, ETHER_ADDR_LEN);
         memcpy(&ether.ether_shost, &mac_addr, ETHER_ADDR_LEN);
 

src/nspawn/nspawn.c

@@ -209,10 +209,10 @@ static void help(void) {
                "     --network-ipvlan=INTERFACE\n"
                "                            Create a ipvlan network interface based on an\n"
                "                            existing network interface to the container\n"
-               "  -n --network-veth         Add a virtual ethernet connection between host\n"
+               "  -n --network-veth         Add a virtual Ethernet connection between host\n"
                "                            and container\n"
                "     --network-bridge=INTERFACE\n"
-               "                            Add a virtual ethernet connection between host\n"
+               "                            Add a virtual Ethernet connection between host\n"
                "                            and container and add it to an existing bridge on\n"
                "                            the host\n"
                "  -p --port=[PROTOCOL:]HOSTPORT[:CONTAINERPORT]\n"

src/shared/machine-pool.c

@@ -378,7 +378,7 @@ int grow_machine_directory(void) {
         if (b.f_bavail > b.f_blocks / 3)
                 return 0;
 
-        /* Calculate how much we are willing to add at maximum */
+        /* Calculate how much we are willing to add at most */
         max_add = ((uint64_t) a.f_bavail * (uint64_t) a.f_bsize) - VAR_LIB_MACHINES_FREE_MIN;
 
         /* Calculate the old size */

src/udev/udev-builtin-net_id.c

@@ -27,7 +27,7 @@
  * http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames
  *
  * Two character prefixes based on the type of interface:
- *   en -- ethernet
+ *   en -- Ethernet
  *   sl -- serial line IP (slip)
  *   wl -- wlan
  *   ww -- wwan
@@ -53,17 +53,17 @@
  * exported.
  * The usual USB configuration == 1 and interface == 0 values are suppressed.
  *
- * PCI ethernet card with firmware index "1":
+ * PCI Ethernet card with firmware index "1":
  *   ID_NET_NAME_ONBOARD=eno1
  *   ID_NET_NAME_ONBOARD_LABEL=Ethernet Port 1
  *
- * PCI ethernet card in hotplug slot with firmware index number:
+ * PCI Ethernet card in hotplug slot with firmware index number:
  *   /sys/devices/pci0000:00/0000:00:1c.3/0000:05:00.0/net/ens1
  *   ID_NET_NAME_MAC=enx000000000466
  *   ID_NET_NAME_PATH=enp5s0
  *   ID_NET_NAME_SLOT=ens1
  *
- * PCI ethernet multi-function card with 2 ports:
+ * PCI Ethernet multi-function card with 2 ports:
  *   /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/net/enp2s0f0
  *   ID_NET_NAME_MAC=enx78e7d1ea46da
  *   ID_NET_NAME_PATH=enp2s0f0